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The RBT Experts
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Tom Kunich
Oct 17, 2023, 1:32:44 PM10/17/23
to
What do you suppose is going on in the minds of the RBT experts who don't use Garmin Heart Rate Monitor (Liebermann doesn't even ride bikes) and when I say that I have TWO of the same type of heart rate monitors that act the same and use up a battery in couple of weeks, they stand in line to tell everyone that I'm lying?
What kind of sick soul that knows absolutely nothing about these devices is willing to tell you that I don't know how to use them correctly? Apparently it is absolutely the most difficult thing in the world to install a battery and then read the results on the Garmin screen.
This is why I get emails from various people that do not want to post here and join any conversations when they would have to contend with people that believe that it takes as much energy to transmit a zero as it does a one.
And yes, there is absolutely no way that I am going to explain to people how to use pulse width modulation to achieve time delay reflection. It id a waste of time and space. When I published a short C program here none of the experts could even understand it. Since the real riders here haven't the slightest interest in C why should I take up their time?
I have a million dollars in investments by knowing what I was doing while our RBT experts are poverty stricken and claiming knowledge on the strength of a piece of paper that means absolutely nothing without some real experience to back it up. Liebermann couldn't get a job as an engineer. That is what HIS degree was worth. Flunky is nothing more than a manufacturing engineer who signs off paperwork, Unfortunately Scharf doesn't understand the basics of a battery charger. While it is possible to regulate the voltage out via PWM, it is a complicated and not very accurate way of doing it. It would be far easier to achieve a better result using straight analog voltages of the correct levels for the specific batteries. In order to have the correct currents you have to make the PWM circuits in such a manner that any damage to the circuits can over-voltage the batteries and blow them up and start a fire.
These are the same experts that cried that I was stupid when I suggested that you DON'T get a Covid-19 vaccination. And now one of the latest papers in medical journals is that 1 in 35 people had serious or permanent heart damage from the vaccines. But that's OK, Fauci got his multimillions. Though since he lied to Congress about it when they get an honest Attorney General he will be off to prison where his billons of stolen loot will do him very little good.
I couldn't POSSIBLY had an argument with Janet Yellen about the cause of inflation DESPITE the fact that a year ago she admitted that she was wrong.
Perhaps our experts should show their expertise by remaining silent since the things they are willing to talk about are the things that they know nothing about.
What kind of sick soul that knows absolutely nothing about these devices is willing to tell you that I don't know how to use them correctly? Apparently it is absolutely the most difficult thing in the world to install a battery and then read the results on the Garmin screen.
This is why I get emails from various people that do not want to post here and join any conversations when they would have to contend with people that believe that it takes as much energy to transmit a zero as it does a one.
And yes, there is absolutely no way that I am going to explain to people how to use pulse width modulation to achieve time delay reflection. It id a waste of time and space. When I published a short C program here none of the experts could even understand it. Since the real riders here haven't the slightest interest in C why should I take up their time?
I have a million dollars in investments by knowing what I was doing while our RBT experts are poverty stricken and claiming knowledge on the strength of a piece of paper that means absolutely nothing without some real experience to back it up. Liebermann couldn't get a job as an engineer. That is what HIS degree was worth. Flunky is nothing more than a manufacturing engineer who signs off paperwork, Unfortunately Scharf doesn't understand the basics of a battery charger. While it is possible to regulate the voltage out via PWM, it is a complicated and not very accurate way of doing it. It would be far easier to achieve a better result using straight analog voltages of the correct levels for the specific batteries. In order to have the correct currents you have to make the PWM circuits in such a manner that any damage to the circuits can over-voltage the batteries and blow them up and start a fire.
These are the same experts that cried that I was stupid when I suggested that you DON'T get a Covid-19 vaccination. And now one of the latest papers in medical journals is that 1 in 35 people had serious or permanent heart damage from the vaccines. But that's OK, Fauci got his multimillions. Though since he lied to Congress about it when they get an honest Attorney General he will be off to prison where his billons of stolen loot will do him very little good.
I couldn't POSSIBLY had an argument with Janet Yellen about the cause of inflation DESPITE the fact that a year ago she admitted that she was wrong.
Perhaps our experts should show their expertise by remaining silent since the things they are willing to talk about are the things that they know nothing about.
AMuzi
Oct 17, 2023, 2:45:32 PM10/17/23
to
or GPS. YMMV but not to my taste.
--
Andrew Muzi
a...@yellowjersey.org
Open every day since 1 April, 1971
sms
Oct 17, 2023, 3:26:15 PM10/17/23
to
On 10/17/2023 11:45 AM, AMuzi wrote:
<snip>
> I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> but not to my taste.
I have no idea what he is ranting about regarding Garmin Heart Rate
Monitor batteries, but if he wants to learn about how EV chargers use
PWM on the CP line to indicate to the vehicle how much charge current is
available from the mains then he can read
<https://www.electronicdesign.com/markets/automotive/article/21267879/electronic-design-an-introduction-to-the-sae-j1772-and-ccs-ev-charging-interfaces>.
BTW, there is a huge difference in the quality of different 2032
batteries. Someone did a test
<https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
with the Ray-O-Vac and Toshiba being the best. The difference between an
el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
one case where you don't want to buy the cheapest battery 2032 cell from
Amazon or from a dollar store or from Harbor Freight. Even some name
brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
Panasonic).
--
“If you are not an expert on a subject, then your opinions about it
really do matter less than the opinions of experts. It's not
indoctrination nor elitism. It's just that you don't know as much as
they do about the subject.”—Tin Foil Awards
<snip>
> I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> but not to my taste.
Monitor batteries, but if he wants to learn about how EV chargers use
PWM on the CP line to indicate to the vehicle how much charge current is
available from the mains then he can read
<https://www.electronicdesign.com/markets/automotive/article/21267879/electronic-design-an-introduction-to-the-sae-j1772-and-ccs-ev-charging-interfaces>.
BTW, there is a huge difference in the quality of different 2032
batteries. Someone did a test
<https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
with the Ray-O-Vac and Toshiba being the best. The difference between an
el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
one case where you don't want to buy the cheapest battery 2032 cell from
Amazon or from a dollar store or from Harbor Freight. Even some name
brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
Panasonic).
--
“If you are not an expert on a subject, then your opinions about it
really do matter less than the opinions of experts. It's not
indoctrination nor elitism. It's just that you don't know as much as
they do about the subject.”—Tin Foil Awards
funkma...@hotmail.com
Oct 17, 2023, 4:49:50 PM10/17/23
to
On Tuesday, October 17, 2023 at 1:32:44 PM UTC-4, Tom Kunich wrote:
> What do you suppose is going on in the minds of the RBT experts
> who don't use Garmin Heart Rate Monitor (Liebermann doesn't even
> ride bikes) and when I say that I have TWO of the same type of
> heart rate monitors that act the same and use up a battery in
> couple of weeks, they stand in line to tell everyone that I'm
> lying?
We don't think you're lying tom, we know you're inept. You're probably buying cheap batteries off ebay (or something similar). You have several people in this forum with various brands of HRMS (including Garmin) that tell you battery life is generally over a year. You won't find any corroboration supporting your claim that they only last two weeks. If that is in fact the case, it's only happening to you.
> What do you suppose is going on in the minds of the RBT experts
> who don't use Garmin Heart Rate Monitor (Liebermann doesn't even
> ride bikes) and when I say that I have TWO of the same type of
> heart rate monitors that act the same and use up a battery in
> couple of weeks, they stand in line to tell everyone that I'm
> lying?
> What kind of sick soul that knows absolutely nothing about
> these devices is willing to tell you that I don't know how
> to use them correctly?
> Apparently it is absolutely the most difficult thing in the
> world to install a battery and then read the results on the
> Garmin screen.
> This is why I get emails from various people that do not want
> to post here and join any conversations
> when they would have to contend with people that believe that
> it takes as much energy to transmit a zero as it does a one.
> And yes, there is absolutely no way that I am going to explain to people how to use pulse width modulation to achieve time delay reflection.
2- That's because you can't. PWM isn't used for testing cables, and it isn't used for generating a TDR pulse.
a- A TDR pulse is a single pulse generated into a transmission line with the intent of reading the reflected pules back to detect impedance anomalies.
b- A PWM signal is a varying pulse width continuous signal used for controlling motors and lighting systems (higher duty cycles results in more energy: brighter lights or faster motor speeds).
> It id a waste of time and space. When I published a short C program here none of the experts could even understand it.
> Since the real riders here haven't the slightest interest in C why should I take up their time?
> I have a million dollars in investments by knowing what I was doing while our RBT experts are poverty stricken
> and claiming knowledge on the strength of a piece of paper that means absolutely nothing without some real experience to back it up. Liebermann couldn't get a job as an engineer. That is what HIS degree was worth.
> Flunky is nothing more than a manufacturing engineer who signs off paperwork
> Unfortunately Scharf doesn't understand the basics of a battery charger. While it is possible to regulate the voltage out via PWM, it is a complicated
> and not very accurate way of doing it.
> It would be far easier to achieve a better result using straight analog voltages of the correct levels for the specific batteries.
> In order to have the correct currents you have to make the PWM circuits in such a manner that
> any damage to the circuits can over-voltage the batteries and blow them up and start a fire.
> These are the same experts that cried that I was stupid when I suggested that you DON'T get a Covid-19 vaccination.
> And now one of the latest papers in medical journals is that 1 in 35 people had serious or permanent heart damage from the vaccines.
https://news.yale.edu/2023/05/05/yale-study-reveals-insights-post-vaccine-heart-inflammation-cases
"males aged 12 to 17, about 22 to 36 per 100,000 experienced myocarditis within 21 days after receiving a second vaccine dose"
Let's see....tom's claim of 1 in 35 or Yales study showing ~30 per 100,000....Who to beleive?
> But that's OK, Fauci got his multimillions. Though since he lied to Congress about it when they
> get an honest Attorney General he will be off to prison where his billons of stolen loot will do him very little good.
> I couldn't POSSIBLY had an argument with Janet Yellen about the cause of inflation DESPITE the fact that a year ago she admitted that she was wrong.
> Perhaps our experts should show their expertise by remaining silent since the things they are willing to talk about are the things that they know nothing about.
funkma...@hotmail.com
Oct 17, 2023, 5:22:07 PM10/17/23
to
On Tuesday, October 17, 2023 at 3:26:15 PM UTC-4, sms wrote:
> On 10/17/2023 11:45 AM, AMuzi wrote:
>
> <snip>
> > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> > but not to my taste.
> I have no idea what he is ranting about regarding Garmin Heart Rate
> Monitor batteries,
He claims the batteries in his HRMs only last two weeks. Of course, everyone else here (and I mean everyone) has noted they get a year or more.
> On 10/17/2023 11:45 AM, AMuzi wrote:
>
> <snip>
> > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> > but not to my taste.
> I have no idea what he is ranting about regarding Garmin Heart Rate
> Monitor batteries,
> but if he wants to learn
> about how EV chargers use
> PWM on the CP line to indicate to the vehicle how much charge current is
> available from the mains then he can read
> <https://www.electronicdesign.com/markets/automotive/article/21267879/electronic-design-an-introduction-to-the-sae-j1772-and-ccs-ev-charging-interfaces>.
> BTW, there is a huge difference in the quality of different 2032
> batteries. Someone did a test
> <https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
> with the Ray-O-Vac and Toshiba being the best. The difference between an
> el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
> one case where you don't want to buy the cheapest battery 2032 cell from
> Amazon or from a dollar store or from Harbor Freight. Even some name
> brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
> Panasonic).
Andre Jute
Oct 17, 2023, 5:45:17 PM10/17/23
to
>
Jeff Liebermann
Oct 17, 2023, 5:47:42 PM10/17/23
to
On Tue, 17 Oct 2023 12:26:12 -0700, sms <scharf...@geemail.com>
wrote:
>BTW, there is a huge difference in the quality of different 2032
>batteries. Someone did a test
><https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
>with the Ray-O-Vac and Toshiba being the best. The difference between an
>el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
>one case where you don't want to buy the cheapest battery 2032 cell from
>Amazon or from a dollar store or from Harbor Freight. Even some name
>brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
>Panasonic).
I suggest that you take another look at his testing methods. He shows
a photo of a Rigol DL3021,
<https://www.rigolna.com/products/dc-power-loads/dl3000/>
his wiring setup and mentions that he ran two tests (at 0.010A and
0.25A).
He claims to have tested 4 cells of each type or 29 * 4 = 116 cells.
If he used the typical drain current of 190 渙 (15k ohm resistive
load) from the data sheet at:
<https://data.energizer.com/pdfs/cr2032.pdf>
each cell would have taken 1245 hrs (approx 52 days) to test. To test
116 cells would have taken 52 * 116 = 6,032 days (16.5 years).
Obviously, he didn't spend 16.5 years testing his battery collection.
Instead of the 190 渙 shown on the data sheet, he sped things up by
increasing the load to 0.01A (10,000 渙). That should speed things up
52 times faster so he could run the tests in a reasonable amount of
time. 6,032 days / 52 = 120 days which is still a rather long time.
Notice that he tested the cells at both 0.010A and 0.025A which seems
rather odd. He doesn't indicate if that means 2 of each cell tested
at 2 different currents, or 4 of each cell tested twice for a total of
8 cells of each type.
The ISR (internal series resistance) increases dramatically with the
load current. Instead of 225ma-hr capacity, with a 10 or 25ma load,
each cell would probably have about 20ma-hr capacity (my guess). That
would speed up the testing even more, but the results aren't even
close to what might consider realistic. CR2032 cells are made to run
at small fractions of a milliamp, not at 10 or 25 milliamps.
To distract the viewer from noticing the ridiculously short battery
life, he doesn't bother mentioning whether his times are in hr:min or
min:sec. If I assume hr:min, then (for example) the Toshiba time
would be 20 hrs for testing just one cell. Therefore the test for all
the cells would be:
4 cells * 29 cell_types * 20 hrs/cell = 2,320 hrs = 96 days.
I don't think he would spend that much time on this test, so it must
be min:sec.
If he had posted that the test runtime for each cell had been only
about 20 minutes (Toshiba), every reader with a clue as to how button
cells work would have pointed out that he was tested under an extreme
overload.
What the test probably shows is the heat dissipating capability of the
cell. If you've ever torn apart a CR2032 (as I have), you might
notice that the internal construction and complexity varies
considerably.
<https://www.google.com/search?q=coin+cell+exploded+view&tbm=isch>
Some are better at removing heat resulting in longer runtime.
Drivel: Yesterdays eye exam showed that I'll probably be needing
cataract eye surgery. No more driving at night for probably 2 months.
--
Jeff Liebermann je...@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558
wrote:
>BTW, there is a huge difference in the quality of different 2032
>batteries. Someone did a test
><https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
>with the Ray-O-Vac and Toshiba being the best. The difference between an
>el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
>one case where you don't want to buy the cheapest battery 2032 cell from
>Amazon or from a dollar store or from Harbor Freight. Even some name
>brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
>Panasonic).
a photo of a Rigol DL3021,
<https://www.rigolna.com/products/dc-power-loads/dl3000/>
his wiring setup and mentions that he ran two tests (at 0.010A and
0.25A).
He claims to have tested 4 cells of each type or 29 * 4 = 116 cells.
If he used the typical drain current of 190 渙 (15k ohm resistive
load) from the data sheet at:
<https://data.energizer.com/pdfs/cr2032.pdf>
each cell would have taken 1245 hrs (approx 52 days) to test. To test
116 cells would have taken 52 * 116 = 6,032 days (16.5 years).
Obviously, he didn't spend 16.5 years testing his battery collection.
Instead of the 190 渙 shown on the data sheet, he sped things up by
increasing the load to 0.01A (10,000 渙). That should speed things up
52 times faster so he could run the tests in a reasonable amount of
time. 6,032 days / 52 = 120 days which is still a rather long time.
Notice that he tested the cells at both 0.010A and 0.025A which seems
rather odd. He doesn't indicate if that means 2 of each cell tested
at 2 different currents, or 4 of each cell tested twice for a total of
8 cells of each type.
The ISR (internal series resistance) increases dramatically with the
load current. Instead of 225ma-hr capacity, with a 10 or 25ma load,
each cell would probably have about 20ma-hr capacity (my guess). That
would speed up the testing even more, but the results aren't even
close to what might consider realistic. CR2032 cells are made to run
at small fractions of a milliamp, not at 10 or 25 milliamps.
To distract the viewer from noticing the ridiculously short battery
life, he doesn't bother mentioning whether his times are in hr:min or
min:sec. If I assume hr:min, then (for example) the Toshiba time
would be 20 hrs for testing just one cell. Therefore the test for all
the cells would be:
4 cells * 29 cell_types * 20 hrs/cell = 2,320 hrs = 96 days.
I don't think he would spend that much time on this test, so it must
be min:sec.
If he had posted that the test runtime for each cell had been only
about 20 minutes (Toshiba), every reader with a clue as to how button
cells work would have pointed out that he was tested under an extreme
overload.
What the test probably shows is the heat dissipating capability of the
cell. If you've ever torn apart a CR2032 (as I have), you might
notice that the internal construction and complexity varies
considerably.
<https://www.google.com/search?q=coin+cell+exploded+view&tbm=isch>
Some are better at removing heat resulting in longer runtime.
Drivel: Yesterdays eye exam showed that I'll probably be needing
cataract eye surgery. No more driving at night for probably 2 months.
--
Jeff Liebermann je...@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558
John B.
Oct 17, 2023, 6:32:36 PM10/17/23
to
When did you post the C program? How many years ago? I can't remember
seeing it and I've been reading your drivel for quite a few years now.
You've told us that you were getting paid a quarter of a million
dollars a year and after what? 30 or 40 years of working you finally
have saved 1 million? Wow!
Re Covid: In the US, 613 million doses have been given so far. During
the last week, shots were administered at an average rate of 30,866
doses a day. So according to your figures some 17 million have serious
hear problems?
In short, Tommy, you appear to be a lying fool!
--
Cheers,
John B.
Catrike Rider
Oct 17, 2023, 6:38:24 PM10/17/23
to
On Tue, 17 Oct 2023 14:47:28 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
Make sure you have really good, dark sunglasses. It took me many
months to get where I could go outside without them. The change is
extraordinary.
wrote:
months to get where I could go outside without them. The change is
extraordinary.
Catrike Rider
Oct 17, 2023, 6:41:00 PM10/17/23
to
Jeff Liebermann
Oct 17, 2023, 7:05:16 PM10/17/23
to
>What do you suppose is going on in the minds of the RBT experts who don't use Garmin Heart Rate Monitor (Liebermann doesn't even ride bikes) and when I say that I have TWO of the same type of heart rate monitors that act the same and use up a battery in couple of weeks, they stand in line to tell everyone that I'm lying?
I've asked you several times which model Garmin HRM you own and you've
either ignore or avoided answering the question. That's sufficient
grounds for me to resort to the default appraisal of your comments,
which that you're lying.
You claim that the battery died in a "couple of weeks". You
previously claimed (and defended) that the batteries lasted only 2 or
3 days. Ah, found:
Oct 10, 2023
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/_kvtd-cRBQAJ>
"And while we're at it the Garmin heart monitor really sucks. The
battery life is about two or three days."
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/b8A6ESpLBQAJ>
"Think about how stupid it is to produce a HRM with only a battery
life of 2-3 days. And you have two of them? Geezz. Lou"
>What kind of sick soul that knows absolutely nothing about these devices is willing to tell you that I don't know how to use them correctly?
calculations. Is that the way an engineer is suppose to act? Have
you ever survived a design review?
However, you misinterpreted my intent. After you claimed that your
unspecified model Garmin HRM battery only lasted 2 days, I asked you
to estimate the battery life and to demonstrate that you are capable
of doing engineering calculations. With your advanced knowledge and
extensive experience, I expected you to quickly provide a solution and
explain your calculations. You posted nothing, so I decided I would
show you how it is done. Instead of providing a complete answer, I
divided the problem into parts and sequentially offered each part to
you as a "hint" hoping that you would pickup from where I left off. So
far, you haven't shown anything that would be useful for electronics
design.
Of course, you will complain that I'm not doing design but rather
reverse engineering. That's true. Analysis often comes before
design. One of the first steps I take when designing anything is to
inspect the competition and determine how they work by reverse
engineering the design. You would probably enjoy that part because
many products I've tested turn out to not meet their published
specifications and sometime include some disgusting design error.
Finding someone else's mistakes should make you a better engineer.
I plant to continue the exercise, not because it might benefit you or
set an example for what you should be capable of doing if you claim to
be a self-taught engineer. Unfortunately, I made a bad guess as to
the Nordic Semi chip used in the Garmin HRM Pro and will need to make
a few changes in my previous "hint". As time permits, I'll continue
with my calculations.
>Apparently it is absolutely the most difficult thing in the world to install a battery and then read the results on the Garmin screen.
<https://support.garmin.com/en-US/?faq=2o5bDoCCN34BfHyjTZLpJ6>
It doesn't seem to display the number of hours remaining.
Hint: If you run the HRM continuously, one battery is good for about
400 hrs or about 16 days. The Garmin 1 year estimated life is based
on 1 hr per day. However, if you somehow manage to leave it running
continuously, you'll have a dead battery in about 16 days. You could
easily calculate how long your HRM battery will last if you estimate
many hours per week you've been riding with your HRM. That may be a
problem because you don't seem to find HRM data useful:
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/_kvtd-cRBQAJ>
"I simply won't use it anymore since I can now judge my heart rate by
my breathing and the pressure in my eyes."
You might want to read the reader comments under:
"Garmin HRM-PRO In-Depth Review"
<https://www.dcrainmaker.com/2020/09/garmin-hrm-pro-chest-strap-depth-review.html>
Search for the word "battery" and you'll find a large number of
comments and issues involving battery.
Jeff Liebermann
Oct 17, 2023, 7:34:28 PM10/17/23
to
On Tue, 17 Oct 2023 14:22:05 -0700 (PDT), "funkma...@hotmail.com"
<funkma...@hotmail.com> wrote:
>On Tuesday, October 17, 2023 at 3:26:15?PM UTC-4, sms wrote:
>> On 10/17/2023 11:45 AM, AMuzi wrote:
>>
>> <snip>
>> > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
>> > but not to my taste.
>> I have no idea what he is ranting about regarding Garmin Heart Rate
>> Monitor batteries,
>
>He claims the batteries in his HRMs only last two weeks. Of course, everyone else here (and I mean everyone) has noted they get a year or more.
Tom's first claim was 2 or 3 days, not months. Next time he mentions
his battery problems, it will likely be years.
previous postings, is lying, or some combination of the
aforementioned.
>> but if he wants to learn
>
>lol...this is tom we're talking about - you think he really wants to learn _any_ thing?
Nope. He wants to harvest the benefits of learning (fame, fortune,
popularity, acclaim, status, expertise, prizes) without exerting the
necessary effort in order to learn something new.
>Tom refuses to pay money for a quality product. He claims to be using brand name batteries, but given his history buying cheap chinese crap, I think we know better.
Yep. However, I don't know better. Too many oddities and unanswered
questions.
<funkma...@hotmail.com> wrote:
>On Tuesday, October 17, 2023 at 3:26:15?PM UTC-4, sms wrote:
>> On 10/17/2023 11:45 AM, AMuzi wrote:
>>
>> <snip>
>> > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
>> > but not to my taste.
>> I have no idea what he is ranting about regarding Garmin Heart Rate
>> Monitor batteries,
>
>He claims the batteries in his HRMs only last two weeks. Of course, everyone else here (and I mean everyone) has noted they get a year or more.
his battery problems, it will likely be years.
Oct 10, 2023
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/_kvtd-cRBQAJ>
"And while we're at it the Garmin heart monitor really sucks. The
battery life is about two or three days. (...) I simply won't use it
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/_kvtd-cRBQAJ>
"And while we're at it the Garmin heart monitor really sucks. The
anymore since I can now judge my heart rate by my breathing and the
pressure in my eyes."
He's either very forgetful, doesn't verify his numbers, can't find his
pressure in my eyes."
previous postings, is lying, or some combination of the
aforementioned.
>> but if he wants to learn
>
>lol...this is tom we're talking about - you think he really wants to learn _any_ thing?
popularity, acclaim, status, expertise, prizes) without exerting the
necessary effort in order to learn something new.
>Tom refuses to pay money for a quality product. He claims to be using brand name batteries, but given his history buying cheap chinese crap, I think we know better.
questions.
Jeff Liebermann
Oct 17, 2023, 8:01:53 PM10/17/23
to
On Tue, 17 Oct 2023 18:38:18 -0400, Catrike Rider
<sol...@drafting.not> wrote:
>On Tue, 17 Oct 2023 14:47:28 -0700, Jeff Liebermann <je...@cruzio.com>
>wrote:
<sol...@drafting.not> wrote:
>On Tue, 17 Oct 2023 14:47:28 -0700, Jeff Liebermann <je...@cruzio.com>
>wrote:
>>Drivel: Yesterdays eye exam showed that I'll probably be needing
>>cataract eye surgery. No more driving at night for probably 2 months.
>
>Make sure you have really good, dark sunglasses. It took me many
>months to get where I could go outside without them. The change is
>extraordinary.
Thanks. I didn't think about that problem. I'm just beginning my
>>cataract eye surgery. No more driving at night for probably 2 months.
>
>Make sure you have really good, dark sunglasses. It took me many
>months to get where I could go outside without them. The change is
>extraordinary.
research. I just discovered I was a candidate for cataract surgery
yesterday. I've done little reading on the topic. I didn't know that
many of my friends have undergone the procedure. Lots of helpful info
so far. Except for night driving, I'm still functional, so there's no
rush.
The opometrist gave me a new prescription but mentioned that it's
probably not going to be an improvement over my current prescription.
I'm tempted to burn about $50 for bifocals to see if she's right.
What else can go wrong? I just bought a new flux core MIG welder.
"Cataract Surgery and now all my auto-tinting shields won't darken
ENOUGH"
<https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
sms
Oct 17, 2023, 8:19:52 PM10/17/23
to
On 10/17/2023 2:47 PM, Jeff Liebermann wrote:
> Notice that he tested the cells at both 0.010A and 0.025A which seems
> rather odd. He doesn't indicate if that means 2 of each cell tested
> at 2 different currents, or 4 of each cell tested twice for a total of
> 8 cells of each type.
<snip>
> Notice that he tested the cells at both 0.010A and 0.025A which seems
> rather odd. He doesn't indicate if that means 2 of each cell tested
> at 2 different currents, or 4 of each cell tested twice for a total of
> 8 cells of each type.
The longevity should correlate to how long the battery would last at
lower current.
sms
Oct 17, 2023, 8:23:22 PM10/17/23
to
On 10/17/2023 4:05 PM, Jeff Liebermann wrote:
> On Tue, 17 Oct 2023 10:32:40 -0700 (PDT), Tom Kunich
> <cycl...@gmail.com> wrote:
>
>> What do you suppose is going on in the minds of the RBT experts who don't use Garmin Heart Rate Monitor (Liebermann doesn't even ride bikes) and when I say that I have TWO of the same type of heart rate monitors that act the same and use up a battery in couple of weeks, they stand in line to tell everyone that I'm lying?
>
> I've asked you several times which model Garmin HRM you own and you've
> either ignore or avoided answering the question. That's sufficient
> grounds for me to resort to the default appraisal of your comments,
> which that you're lying.
<snip>
> On Tue, 17 Oct 2023 10:32:40 -0700 (PDT), Tom Kunich
> <cycl...@gmail.com> wrote:
>
>> What do you suppose is going on in the minds of the RBT experts who don't use Garmin Heart Rate Monitor (Liebermann doesn't even ride bikes) and when I say that I have TWO of the same type of heart rate monitors that act the same and use up a battery in couple of weeks, they stand in line to tell everyone that I'm lying?
>
> I've asked you several times which model Garmin HRM you own and you've
> either ignore or avoided answering the question. That's sufficient
> grounds for me to resort to the default appraisal of your comments,
> which that you're lying.
If you look at the comments by regular people on the battery life of the
Garmin HRMs using 2032 batteries they are getting 4-12 months per battery.
John B.
Oct 17, 2023, 8:31:28 PM10/17/23
to
On Tue, 17 Oct 2023 16:05:00 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
When listening to Tommy, just imagine that you are carrying those
heavy stone slabs down from the mountain and there's Tommy with his
Gilded Calf.
Unfortunately your staff must be broken as repeatedly striking him
with it doesn't seem to produce water... or truth.
--
Cheers,
John B.
wrote:
heavy stone slabs down from the mountain and there's Tommy with his
Gilded Calf.
Unfortunately your staff must be broken as repeatedly striking him
with it doesn't seem to produce water... or truth.
--
Cheers,
John B.
Jeff Liebermann
Oct 17, 2023, 8:36:18 PM10/17/23
to
On Tue, 17 Oct 2023 17:19:48 -0700, sms <scharf...@geemail.com>
wrote:
>On 10/17/2023 2:47 PM, Jeff Liebermann wrote:
>
>> Notice that he tested the cells at both 0.010A and 0.025A which seems
>> rather odd. He doesn't indicate if that means 2 of each cell tested
>> at 2 different currents, or 4 of each cell tested twice for a total of
>> 8 cells of each type.
>
><snip>
>
>The longevity should correlate to how long the battery would last at
>lower current.
Agreed, which implies that any testing should be done at normal
operating currents and not as some absurdly high current selected
solely to speed up testing. If you're willing to wait 400 hrs (16
days) for each battery under test, that's fine.
Methinks the problem here is the way Garmin marketing advertises their
battery life. Instead of reporting continuous runtime hours (about
400 hrs or 16 days), Garmin claims 1 year battery life at 1 hour
operation per day. That's 365 continuous hours. Close enough. When
users claim they need to change batteries after some number of days,
months or years, there's no consideration for hours of operation.
Someone touring and riding many hours per day with the HRM will have a
large number of operating hours, while someone who's riding an erratic
schedule will have far fewer hours.
wrote:
>On 10/17/2023 2:47 PM, Jeff Liebermann wrote:
>
>> Notice that he tested the cells at both 0.010A and 0.025A which seems
>> rather odd. He doesn't indicate if that means 2 of each cell tested
>> at 2 different currents, or 4 of each cell tested twice for a total of
>> 8 cells of each type.
>
><snip>
>
>The longevity should correlate to how long the battery would last at
>lower current.
operating currents and not as some absurdly high current selected
solely to speed up testing. If you're willing to wait 400 hrs (16
days) for each battery under test, that's fine.
Methinks the problem here is the way Garmin marketing advertises their
battery life. Instead of reporting continuous runtime hours (about
400 hrs or 16 days), Garmin claims 1 year battery life at 1 hour
operation per day. That's 365 continuous hours. Close enough. When
users claim they need to change batteries after some number of days,
months or years, there's no consideration for hours of operation.
Someone touring and riding many hours per day with the HRM will have a
large number of operating hours, while someone who's riding an erratic
schedule will have far fewer hours.
sms
Oct 17, 2023, 8:36:52 PM10/17/23
to
On 10/17/2023 5:01 PM, Jeff Liebermann wrote:
<snip>
> "Cataract Surgery and now all my auto-tinting shields won't darken
> ENOUGH"
> <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
Having just gone through this last month:
1. There is no upside in getting a new prescription. Tried that! It
doesn't help.
2. Driving at night is the big improvement after the surgery because the
glare is greatly reduced.
3. Yes, sunglasses are essential after surgery. I got something similar
to this, at Walmart <https://www.ebay.com/itm/264519888212>.
4. Your eyesight, post-surgery, is likely good enough for driving
without glasses, but not great. After a month you get another eye exam
and order new glasses.
5. After the surgery, adjustable glasses are helpful until you get new
prescription glasses with a weaker prescription.
<https://www.ebay.com/itm/143342174087>. You can wear them under large
sunglasses. I can send you mine, I have no use for them anymore.
<snip>
> "Cataract Surgery and now all my auto-tinting shields won't darken
> ENOUGH"
> <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
1. There is no upside in getting a new prescription. Tried that! It
doesn't help.
2. Driving at night is the big improvement after the surgery because the
glare is greatly reduced.
3. Yes, sunglasses are essential after surgery. I got something similar
to this, at Walmart <https://www.ebay.com/itm/264519888212>.
4. Your eyesight, post-surgery, is likely good enough for driving
without glasses, but not great. After a month you get another eye exam
and order new glasses.
5. After the surgery, adjustable glasses are helpful until you get new
prescription glasses with a weaker prescription.
<https://www.ebay.com/itm/143342174087>. You can wear them under large
sunglasses. I can send you mine, I have no use for them anymore.
Jeff Liebermann
Oct 17, 2023, 8:45:59 PM10/17/23
to
On Tue, 17 Oct 2023 17:23:19 -0700, sms <scharf...@geemail.com>
wrote:
>On 10/17/2023 4:05 PM, Jeff Liebermann wrote:
>> On Tue, 17 Oct 2023 10:32:40 -0700 (PDT), Tom Kunich
>> <cycl...@gmail.com> wrote:
>>
>>> What do you suppose is going on in the minds of the RBT experts who don't use Garmin Heart Rate Monitor (Liebermann doesn't even ride bikes) and when I say that I have TWO of the same type of heart rate monitors that act the same and use up a battery in couple of weeks, they stand in line to tell everyone that I'm lying?
>>
>> I've asked you several times which model Garmin HRM you own and you've
>> either ignore or avoided answering the question. That's sufficient
>> grounds for me to resort to the default appraisal of your comments,
>> which that you're lying.
>
><snip>
>
>If you look at the comments by regular people on the battery life of the
>Garmin HRMs using 2032 batteries they are getting 4-12 months per battery.
I saw that. However, I also saw some complains about short battery
life or having to replace batteries too often. All of the latter
failed to disclose how many hours of riding with an HRM was involved.
It's not the battery replacement interval that's important, but rather
the hours of use that were provide.
I also saw some indications of preemptive battery replacement.
Replacing the battery before it was totally dead is a good idea, but
does take it's toll if they are using the replacement interval as an
indication of battery life. A small error in the Garmin Connect app
algorithm for battery SoC (state of charge), would have a big effect
on measured battery life. I didn't see anyone measure the battery
voltage when it was replaced. My guess(tm) is that there have been
quite a few premature replacements.
I didn't count how many times the word "battery" appears in the
article, but there were more than I would have expected:
wrote:
>On 10/17/2023 4:05 PM, Jeff Liebermann wrote:
>> On Tue, 17 Oct 2023 10:32:40 -0700 (PDT), Tom Kunich
>> <cycl...@gmail.com> wrote:
>>
>>> What do you suppose is going on in the minds of the RBT experts who don't use Garmin Heart Rate Monitor (Liebermann doesn't even ride bikes) and when I say that I have TWO of the same type of heart rate monitors that act the same and use up a battery in couple of weeks, they stand in line to tell everyone that I'm lying?
>>
>> I've asked you several times which model Garmin HRM you own and you've
>> either ignore or avoided answering the question. That's sufficient
>> grounds for me to resort to the default appraisal of your comments,
>> which that you're lying.
>
><snip>
>
>If you look at the comments by regular people on the battery life of the
>Garmin HRMs using 2032 batteries they are getting 4-12 months per battery.
life or having to replace batteries too often. All of the latter
failed to disclose how many hours of riding with an HRM was involved.
It's not the battery replacement interval that's important, but rather
the hours of use that were provide.
I also saw some indications of preemptive battery replacement.
Replacing the battery before it was totally dead is a good idea, but
does take it's toll if they are using the replacement interval as an
indication of battery life. A small error in the Garmin Connect app
algorithm for battery SoC (state of charge), would have a big effect
on measured battery life. I didn't see anyone measure the battery
voltage when it was replaced. My guess(tm) is that there have been
quite a few premature replacements.
I didn't count how many times the word "battery" appears in the
article, but there were more than I would have expected:
Jeff Liebermann
Oct 17, 2023, 9:20:42 PM10/17/23
to
On Wed, 18 Oct 2023 07:31:23 +0700, John B. <sloc...@gmail.com>
wrote:
>When listening to Tommy, just imagine that you are carrying those
>heavy stone slabs down from the mountain and there's Tommy with his
>Gilded Calf.
The ancient Egyptians prized their gold and would not have allowed any
to leave the country. Meanwhile, over the centuries, the size of the
biblical golden calf may have been exaggerated.
"Archeologists Unearth 'Golden Calf' in Israel"
<https://www.nytimes.com/1990/07/25/world/archeologists-unearth-golden-calf-in-israel.html>
"The calf is about 4 1/2 inches long, 4 1/4 inches tall and weighs
just under one pound."
"The Ten Commandments(1956) - Moses Throws The Tablets At The Golden
Calf" (4:09)
<https://www.youtube.com/watch?v=Nns9HfOM-Ro>
We probably should also downsize the "heavy stone tablet" that Moses
dragged down the mountain (twice) to something lighter and more
suitable for desert wandering. The tablets looked fairly light weight
in the movie clip. Gold is really nice, but if it's too heavy, one is
likely to lose it during an escape from Egypt.
That begs the question as to why a small golden calf and not a huge
golden bull?
Hint: If you double the size of the golden calf, the weight goes up 8
times (two cubed).
>Unfortunately your staff must be broken as repeatedly striking him
>with it doesn't seem to produce water... or truth.
I didn't expect or want water. I wanted blood.
Doing something repeatedly and expecting different results is a good
definition of insanity. My most effective method of beating Tom about
the ears is to use his own written words against him. I can usually
see an effect, but it doesn't last. He just returns awaiting further
beatings.
wrote:
>When listening to Tommy, just imagine that you are carrying those
>heavy stone slabs down from the mountain and there's Tommy with his
>Gilded Calf.
to leave the country. Meanwhile, over the centuries, the size of the
biblical golden calf may have been exaggerated.
"Archeologists Unearth 'Golden Calf' in Israel"
<https://www.nytimes.com/1990/07/25/world/archeologists-unearth-golden-calf-in-israel.html>
"The calf is about 4 1/2 inches long, 4 1/4 inches tall and weighs
just under one pound."
"The Ten Commandments(1956) - Moses Throws The Tablets At The Golden
Calf" (4:09)
<https://www.youtube.com/watch?v=Nns9HfOM-Ro>
We probably should also downsize the "heavy stone tablet" that Moses
dragged down the mountain (twice) to something lighter and more
suitable for desert wandering. The tablets looked fairly light weight
in the movie clip. Gold is really nice, but if it's too heavy, one is
likely to lose it during an escape from Egypt.
That begs the question as to why a small golden calf and not a huge
golden bull?
Hint: If you double the size of the golden calf, the weight goes up 8
times (two cubed).
>Unfortunately your staff must be broken as repeatedly striking him
>with it doesn't seem to produce water... or truth.
Doing something repeatedly and expecting different results is a good
definition of insanity. My most effective method of beating Tom about
the ears is to use his own written words against him. I can usually
see an effect, but it doesn't last. He just returns awaiting further
beatings.
John B.
Oct 17, 2023, 9:44:37 PM10/17/23
to
On Tue, 17 Oct 2023 18:20:27 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
Re Tablets. There is mention of the tablets being carried in a "Arc"
(box), apparently with handles fore and aft, so they must not have
been excessively heavy. And Moses carried two of them down off the
mountain in his hands, more evidence that they weren't "that" heavy.
Unfortunately Tom, like Frank, "knows" that his notions are the
complete and entire truth and thus other's arguments must be wrong!
(the moon really is blue cheese).
He recently made an announce that the Janet Yellen had admitted that
she was wrong, and thus the implication that he must have been right.
But I read a report of what she actually said and she was talking
about the degree of the inflation not whether or not there was one and
explained that the Ukraine war had effected gas and food prices world
wide.
--
Cheers,
John B.
wrote:
(box), apparently with handles fore and aft, so they must not have
been excessively heavy. And Moses carried two of them down off the
mountain in his hands, more evidence that they weren't "that" heavy.
Unfortunately Tom, like Frank, "knows" that his notions are the
complete and entire truth and thus other's arguments must be wrong!
(the moon really is blue cheese).
He recently made an announce that the Janet Yellen had admitted that
she was wrong, and thus the implication that he must have been right.
But I read a report of what she actually said and she was talking
about the degree of the inflation not whether or not there was one and
explained that the Ukraine war had effected gas and food prices world
wide.
--
Cheers,
John B.
funkma...@hotmail.com
Oct 18, 2023, 6:15:10 AM10/18/23
to
On Tuesday, October 17, 2023 at 6:32:36 PM UTC-4, John B. wrote:
>
>
> When did you post the C program? How many years ago? I can't remember
> seeing it and I've been reading your drivel for quite a few years now.
It was here:
>
>
> When did you post the C program? How many years ago? I can't remember
> seeing it and I've been reading your drivel for quite a few years now.
https://groups.google.com/g/rec.bicycles.tech/c/mKhS2lPQY_A/m/twbRAH9LAgAJ
I didn't see it when he posted it, but responded later here:
https://groups.google.com/g/rec.bicycles.tech/c/DnS9rz0I4-4/m/7C6NFt3kBQAJ
and here
https://groups.google.com/g/rec.bicycles.tech/c/2tCQqDUI-bc/m/YrpHuz1wAwAJ
While completely ignoring the irony that he wasn't able to grasp 120 lines of java written for an Arduino here:
https://groups.google.com/g/rec.bicycles.tech/c/Yezk3bAfaDg/m/tCJk8r3aDAAJ
and here:
https://groups.google.com/g/rec.bicycles.tech/c/Yezk3bAfaDg/m/pDpDTl0ADAAJ
His response?
https://groups.google.com/g/rec.bicycles.tech/c/Yezk3bAfaDg/m/P-pK-fEDDAAJ
"It is simple and child's play and yet you are unable to tell us age and what you actually do for a living. Inside of your mind is a blank spot where a though might have resided in a regular person."
IOW - tommy isn't a software engineer and never was. He knows a few buzzwords, and might have poked into so code for a bit as an engineering tech, but he never wrote a complete program for his "professional" job duties.
Tim R
Oct 18, 2023, 8:17:04 AM10/18/23
to
On Tuesday, October 17, 2023 at 8:36:52 PM UTC-4, sms wrote:
> On 10/17/2023 5:01 PM, Jeff Liebermann wrote:
>
> <snip>
> > "Cataract Surgery and now all my auto-tinting shields won't darken
> > ENOUGH"
> > <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
> Having just gone through this last month:
>
> 1. There is no upside in getting a new prescription. Tried that! It
> doesn't help.
>
> 2. Driving at night is the big improvement after the surgery because the
> glare is greatly reduced.
>
> 3. Yes, sunglasses are essential after surgery. I got something similar
> to this, at Walmart <https://www.ebay.com/itm/264519888212>.
>
> 4. Your eyesight, post-surgery, is likely good enough for driving
> without glasses, but not great. After a month you get another eye exam
> and order new glasses.
I resisted the surgery quite a while but finally had it done. I shouldn't have waited, the improvement is amazing.
> On 10/17/2023 5:01 PM, Jeff Liebermann wrote:
>
> <snip>
> > "Cataract Surgery and now all my auto-tinting shields won't darken
> > ENOUGH"
> > <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
> Having just gone through this last month:
>
> 1. There is no upside in getting a new prescription. Tried that! It
> doesn't help.
>
> 2. Driving at night is the big improvement after the surgery because the
> glare is greatly reduced.
>
> 3. Yes, sunglasses are essential after surgery. I got something similar
> to this, at Walmart <https://www.ebay.com/itm/264519888212>.
>
> 4. Your eyesight, post-surgery, is likely good enough for driving
> without glasses, but not great. After a month you get another eye exam
> and order new glasses.
I still need reading glasses. I could probably drive without glasses and read speed limits but not street signs. I've been able to sort out reading glasses for the distance of a music stand and, combined with a tablet for turning pages, I can see music better now than in the past 30 years.
There is some increased risk of a retinal detachment and I have to give up shooting heavy recoil elephant guns. (but I never did anyway)
AMuzi
Oct 18, 2023, 9:40:05 AM10/18/23
to
On 10/17/2023 7:01 PM, Jeff Liebermann wrote:
> On Tue, 17 Oct 2023 18:38:18 -0400, Catrike Rider
> <sol...@drafting.not> wrote:
>
>> On Tue, 17 Oct 2023 14:47:28 -0700, Jeff Liebermann <je...@cruzio.com>
>> wrote:
>
>>> Drivel: Yesterdays eye exam showed that I'll probably be needing
>>> cataract eye surgery. No more driving at night for probably 2 months.
>>
>> Make sure you have really good, dark sunglasses. It took me many
>> months to get where I could go outside without them. The change is
>> extraordinary.
>
> Thanks. I didn't think about that problem. I'm just beginning my
> research. I just discovered I was a candidate for cataract surgery
> yesterday. I've done little reading on the topic. I didn't know that
> many of my friends have undergone the procedure. Lots of helpful info
> so far. Except for night driving, I'm still functional, so there's no
> rush.
>
> The opometrist gave me a new prescription but mentioned that it's
> probably not going to be an improvement over my current prescription.
> I'm tempted to burn about $50 for bifocals to see if she's right.
>
> What else can go wrong? I just bought a new flux core MIG welder.
>
> "Cataract Surgery and now all my auto-tinting shields won't darken
> ENOUGH"
> <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
>
>
I am not an expert and some or all of this may not reflect
> On Tue, 17 Oct 2023 18:38:18 -0400, Catrike Rider
> <sol...@drafting.not> wrote:
>
>> On Tue, 17 Oct 2023 14:47:28 -0700, Jeff Liebermann <je...@cruzio.com>
>> wrote:
>
>>> Drivel: Yesterdays eye exam showed that I'll probably be needing
>>> cataract eye surgery. No more driving at night for probably 2 months.
>>
>> Make sure you have really good, dark sunglasses. It took me many
>> months to get where I could go outside without them. The change is
>> extraordinary.
>
> Thanks. I didn't think about that problem. I'm just beginning my
> research. I just discovered I was a candidate for cataract surgery
> yesterday. I've done little reading on the topic. I didn't know that
> many of my friends have undergone the procedure. Lots of helpful info
> so far. Except for night driving, I'm still functional, so there's no
> rush.
>
> The opometrist gave me a new prescription but mentioned that it's
> probably not going to be an improvement over my current prescription.
> I'm tempted to burn about $50 for bifocals to see if she's right.
>
> What else can go wrong? I just bought a new flux core MIG welder.
>
> "Cataract Surgery and now all my auto-tinting shields won't darken
> ENOUGH"
> <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
>
>
your situation.
Girlfriend complained of degraded vision last January. She
already had prescription bifocals. She was told she needed
cataract surgery. I looked in her eyes with an oblique
bright light and a magnifier, didn't see any clouding or
anything but then again I am not an expert.
She had both eyes done over a two month span which meant no
driving (a real difficulty in her remote area) after which
she had no improvement whatsoever.
She was referred to a specialist who said she needed
internal eye surgeries to remove retina occlusions. That
spanned another three months. The worst was being required
to keep her head facing down for ten days after each
procedure which meant several of her friends, her son and I
took over household maintenance and cooking besides her
extreme discomfort (and no reading).
Last surgery was in July. She can drive now but not at
night, reads with a magnifier and is scheduled for an eye
exam and hopefully new prescription after New Year's.
Jeff Liebermann
Oct 18, 2023, 12:32:51 PM10/18/23
to
On Wed, 18 Oct 2023 07:40:32 -0500, AMuzi <a...@yellowjersey.org> wrote:
(trimmed)
I hope she improves.
That's close to my worst case nightmare. At this point, I've
identified about 15 friends and aquaintences who have had cataract
surgery. 13 were an unqualified success. The worst complaint
involved scheduling and eyedrops. One friend had both eyes done at
the same time with good results. However, 2 aquaintences had
problems. After 2 years, one is experiencing intermittent eye pains.
The other indicated that his eyesight became worse. Skimming Google
search, there are claims of 90% to 99% success. Most claims are
around 95%:
<https://www.google.com/search?q=cataract+surgery+chance+of+successful+outcome>
A 5% failure rate means that 1 patient in 20 will have a problem.
That's not what I would call a guaranteed success. In the USA, there
are typically 3.7 million cataract surgeries per year. 5% failure
rate would mean 185,000 failed surgeries per year. Presented in this
manner, the odds are good, but not great. It might be that 5% of the
patients had other problems, didn't follow instructions, or were
cursed with a sloppy surgeon. The optometrist mentioined that she saw
no potential complications, so I might be among the lucky winners.
I've been using this as a reference:
"Know Your Chances - Understanding Health Statistics"
<https://www.ncbi.nlm.nih.gov/books/NBK115435/>
<https://www.ncbi.nlm.nih.gov/books/NBK115435/pdf/Bookshelf_NBK115435.pdf>
Oh swell. Cellphone just lit up with an earthquake alert.
(trimmed)
>She was referred to a specialist who said she needed
>internal eye surgeries to remove retina occlusions. That
>spanned another three months. The worst was being required
>to keep her head facing down for ten days after each
>procedure which meant several of her friends, her son and I
>took over household maintenance and cooking besides her
>extreme discomfort (and no reading).
>
>Last surgery was in July. She can drive now but not at
>night, reads with a magnifier and is scheduled for an eye
>exam and hopefully new prescription after New Year's.
Thanks for the advice. Sorry that she had to go through that orderal.
>internal eye surgeries to remove retina occlusions. That
>spanned another three months. The worst was being required
>to keep her head facing down for ten days after each
>procedure which meant several of her friends, her son and I
>took over household maintenance and cooking besides her
>extreme discomfort (and no reading).
>
>Last surgery was in July. She can drive now but not at
>night, reads with a magnifier and is scheduled for an eye
>exam and hopefully new prescription after New Year's.
I hope she improves.
That's close to my worst case nightmare. At this point, I've
identified about 15 friends and aquaintences who have had cataract
surgery. 13 were an unqualified success. The worst complaint
involved scheduling and eyedrops. One friend had both eyes done at
the same time with good results. However, 2 aquaintences had
problems. After 2 years, one is experiencing intermittent eye pains.
The other indicated that his eyesight became worse. Skimming Google
search, there are claims of 90% to 99% success. Most claims are
around 95%:
<https://www.google.com/search?q=cataract+surgery+chance+of+successful+outcome>
A 5% failure rate means that 1 patient in 20 will have a problem.
That's not what I would call a guaranteed success. In the USA, there
are typically 3.7 million cataract surgeries per year. 5% failure
rate would mean 185,000 failed surgeries per year. Presented in this
manner, the odds are good, but not great. It might be that 5% of the
patients had other problems, didn't follow instructions, or were
cursed with a sloppy surgeon. The optometrist mentioined that she saw
no potential complications, so I might be among the lucky winners.
I've been using this as a reference:
"Know Your Chances - Understanding Health Statistics"
<https://www.ncbi.nlm.nih.gov/books/NBK115435/>
<https://www.ncbi.nlm.nih.gov/books/NBK115435/pdf/Bookshelf_NBK115435.pdf>
Oh swell. Cellphone just lit up with an earthquake alert.
Jeff Liebermann
Oct 18, 2023, 12:34:29 PM10/18/23
to
On Wed, 18 Oct 2023 09:30:54 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
>Oh swell. Cellphone just lit up with an earthquake alert.
Nothing felt here. magnitude 4.6
<https://earthquake.usgs.gov/earthquakes/eventpage/ew1697646550/executive>
What else can go wrong today?
wrote:
>Oh swell. Cellphone just lit up with an earthquake alert.
<https://earthquake.usgs.gov/earthquakes/eventpage/ew1697646550/executive>
What else can go wrong today?
Catrike Rider
Oct 18, 2023, 12:43:49 PM10/18/23
to
without by popping the lens out glasses on the side of the good eye.
That would only work if the "fixed" eye didn't need glasses, which was
the case for both of us.
>She was referred to a specialist who said she needed
>internal eye surgeries to remove retina occlusions. That
>spanned another three months. The worst was being required
>to keep her head facing down for ten days after each
>procedure which meant several of her friends, her son and I
>took over household maintenance and cooking besides her
>extreme discomfort (and no reading).
eyesight.
>Last surgery was in July. She can drive now but not at
>night, reads with a magnifier and is scheduled for an eye
>exam and hopefully new prescription after New Year's.
10 years or so, when I needed glasses beyond drugstore "readers."
After the cataract surgery, I do fine without glasses except for
drugstore "readers" for really tiny closeup stuff.
My wife had worn thick glasses from early childhood on. She was very
nearsighted and had an astigmatism in one eye. After the cataract
surgery she only needs drugstore readers and her distance eyesight is
better than mine.
The astigmatism correction was an very expensive extra expense, but
was part of the cataract procedure. I believe it involved shaping the
new lens.
AMuzi
Oct 18, 2023, 1:02:43 PM10/18/23
to
95% success rate.
Jeff Liebermann
Oct 18, 2023, 1:07:05 PM10/18/23
to
On Tue, 17 Oct 2023 17:36:46 -0700, sms <scharf...@geemail.com>
wrote:
>On 10/17/2023 5:01 PM, Jeff Liebermann wrote:
>
><snip>
>
>> "Cataract Surgery and now all my auto-tinting shields won't darken
>> ENOUGH"
>> <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
>
>
>Having just gone through this last month:
>
>1. There is no upside in getting a new prescription. Tried that! It
>doesn't help.
Thanks. You just talked me out of trying that.
However, I'm also tempted to do my own prescriptions using trial
lenses and a trial lens frame:
<https://www.ebay.com/sch/i.html?_nkw=optometrist+trial+lens+frame>
<https://www.ebay.com/itm/186111879094>
and then order glasses from Zenni Optical. An exam currently costs me
$105 at Costco, making the do-it-myself option a tolerable
alternative. Feel free to tell me I'm insane.
>2. Driving at night is the big improvement after the surgery because the
>glare is greatly reduced.
That's my major problem. I forgot to check sunset time on Monday and
ended up driving home in the dark. It was a white-knuckle ride. I
then repeated the mistake the next morning when I was scheduled to
arrive for a carotid artery sonogram. Fortunately, there was little
traffic at 6AM. Incidentally, I passed the sonogram within normal
limits.
>3. Yes, sunglasses are essential after surgery. I got something similar
>to this, at Walmart <https://www.ebay.com/itm/264519888212>.
Maybe I could buy gaming goggles such as:
<https://about.fb.com/news/2023/09/meet-meta-quest-3-mixed-reality-headset/>
and try to convince Medicare that it's for medical purposes? While I
don't like "dark mode" on the computer monitor, it might be useful as
a replacement for dark glasses. Feel free to tell me I'm insane.
>4. Your eyesight, post-surgery, is likely good enough for driving
>without glasses, but not great. After a month you get another eye exam
>and order new glasses.
Thanks. I rather expected to go through multiple prescriptions before
things settle down.
>5. After the surgery, adjustable glasses are helpful until you get new
>prescription glasses with a weaker prescription.
><https://www.ebay.com/itm/143342174087>. You can wear them under large
>sunglasses. I can send you mine, I have no use for them anymore.
Thanks for the offer but there is no need to send me yours. They're
cheap enough. I think I'll order a pair now. My eyes have been
changing enough for them to be useful. Right now, I have 3 pairs of
glasses that I'm using. Reading, computer and driving. I'm getting a
bit tired of juggling them and suspect that adjustable glasses might
be useful.
wrote:
>On 10/17/2023 5:01 PM, Jeff Liebermann wrote:
>
><snip>
>
>> "Cataract Surgery and now all my auto-tinting shields won't darken
>> ENOUGH"
>> <https://weldingweb.com/vbb/threads/705815-Cataract-Surgery-and-now-all-my-auto-tinting-shileds-won-t-darken-ENOUGH>
>
>
>Having just gone through this last month:
>
>1. There is no upside in getting a new prescription. Tried that! It
>doesn't help.
However, I'm also tempted to do my own prescriptions using trial
lenses and a trial lens frame:
<https://www.ebay.com/sch/i.html?_nkw=optometrist+trial+lens+frame>
<https://www.ebay.com/itm/186111879094>
and then order glasses from Zenni Optical. An exam currently costs me
$105 at Costco, making the do-it-myself option a tolerable
alternative. Feel free to tell me I'm insane.
>2. Driving at night is the big improvement after the surgery because the
>glare is greatly reduced.
ended up driving home in the dark. It was a white-knuckle ride. I
then repeated the mistake the next morning when I was scheduled to
arrive for a carotid artery sonogram. Fortunately, there was little
traffic at 6AM. Incidentally, I passed the sonogram within normal
limits.
>3. Yes, sunglasses are essential after surgery. I got something similar
>to this, at Walmart <https://www.ebay.com/itm/264519888212>.
<https://about.fb.com/news/2023/09/meet-meta-quest-3-mixed-reality-headset/>
and try to convince Medicare that it's for medical purposes? While I
don't like "dark mode" on the computer monitor, it might be useful as
a replacement for dark glasses. Feel free to tell me I'm insane.
>4. Your eyesight, post-surgery, is likely good enough for driving
>without glasses, but not great. After a month you get another eye exam
>and order new glasses.
things settle down.
>5. After the surgery, adjustable glasses are helpful until you get new
>prescription glasses with a weaker prescription.
><https://www.ebay.com/itm/143342174087>. You can wear them under large
>sunglasses. I can send you mine, I have no use for them anymore.
cheap enough. I think I'll order a pair now. My eyes have been
changing enough for them to be useful. Right now, I have 3 pairs of
glasses that I'm using. Reading, computer and driving. I'm getting a
bit tired of juggling them and suspect that adjustable glasses might
be useful.
Jeff Liebermann
Oct 18, 2023, 1:14:05 PM10/18/23
to
On Wed, 18 Oct 2023 12:02:37 -0500, AMuzi <a...@yellowjersey.org> wrote:
>You would not jump out of an airplane if parachutes had a
>95% success rate.
Agreed, which is why I'm worried. I had a similar problem with
>You would not jump out of an airplane if parachutes had a
>95% success rate.
creative statistics trying to estimate my expected lifetime after
heart by pass surgery in early 2002. The definition of "success" was
that I survive for 5 years. That was easily achievable. However, I
later discovered that most of the failures begin about 15 years after
the surgery. Fortunately, I had a "booster" of sorts with the
installation of 2 stents in 2016 which probably extended my life a few
more years. As you might suspect, I'm VERY careful when dealing with
medical statistics.
Jeff Liebermann
Oct 18, 2023, 1:25:00 PM10/18/23
to
On Wed, 18 Oct 2023 05:17:01 -0700 (PDT), Tim R
<timoth...@gmail.com> wrote:
>There is some increased risk of a retinal detachment and I have to give up shooting heavy recoil elephant guns. (but I never did anyway)
Thanks. I was warned about that possibility. I asked the optometrist
<timoth...@gmail.com> wrote:
>There is some increased risk of a retinal detachment and I have to give up shooting heavy recoil elephant guns. (but I never did anyway)
if she could see any evidence of retinal detachment problems. She
indicated that she would need a dilate the pupils to be sure, but with
the instruments on hand, she didn't see anything that might be a
problem.
I've been cutting and splitting most of my own firewood for the last
40 years. This years pile:
<https://photos.app.goo.gl/ihpdczg9oDqku8Ru8>
I only did about 1 cord because I spent all of spring and part of
summer recoving from hiatal hernia surgery. So, I bought the 2 cords
in the first photo. I think I'll be ok with everything except
splitting. That's probably sufficient justification to buy (or rent)
a hydraulic wood splitter (before California bans small IC engines on
Jan 1, 2024).
Frank Krygowski
Oct 18, 2023, 1:25:24 PM10/18/23
to
On 10/18/2023 12:34 PM, Jeff Liebermann wrote:
> On Wed, 18 Oct 2023 09:30:54 -0700, Jeff Liebermann <je...@cruzio.com>
> wrote:
>
>> Oh swell. Cellphone just lit up with an earthquake alert.
>
> Nothing felt here. magnitude 4.6
> <https://earthquake.usgs.gov/earthquakes/eventpage/ew1697646550/executive>
> What else can go wrong today?
Hmm. I'd count "nothing felt here" as something that went right!
> On Wed, 18 Oct 2023 09:30:54 -0700, Jeff Liebermann <je...@cruzio.com>
> wrote:
>
>> Oh swell. Cellphone just lit up with an earthquake alert.
>
> Nothing felt here. magnitude 4.6
> <https://earthquake.usgs.gov/earthquakes/eventpage/ew1697646550/executive>
> What else can go wrong today?
--
- Frank Krygowski
Tom Kunich
Oct 18, 2023, 1:41:34 PM10/18/23
to
On Tuesday, October 17, 2023 at 12:26:15 PM UTC-7, sms wrote:
> On 10/17/2023 11:45 AM, AMuzi wrote:
>
> <snip>
> > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> > but not to my taste.
> I have no idea what he is ranting about regarding Garmin Heart Rate
> Monitor batteries, but if he wants to learn about how EV chargers use
> On 10/17/2023 11:45 AM, AMuzi wrote:
>
> <snip>
> > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> > but not to my taste.
> I have no idea what he is ranting about regarding Garmin Heart Rate
> PWM on the CP line to indicate to the vehicle how much charge current is
> available from the mains then he can read
> <https://www.electronicdesign.com/markets/automotive/article/21267879/electronic-design-an-introduction-to-the-sae-j1772-and-ccs-ev-charging-interfaces>.
>
> BTW, there is a huge difference in the quality of different 2032
> batteries. Someone did a test
> <https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
> with the Ray-O-Vac and Toshiba being the best. The difference between an
> el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
> one case where you don't want to buy the cheapest battery 2032 cell from
> Amazon or from a dollar store or from Harbor Freight. Even some name
> brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
> Panasonic).
>
> BTW, there is a huge difference in the quality of different 2032
> batteries. Someone did a test
> <https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
> with the Ray-O-Vac and Toshiba being the best. The difference between an
> el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
> one case where you don't want to buy the cheapest battery 2032 cell from
> Amazon or from a dollar store or from Harbor Freight. Even some name
> brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
> Panasonic).
>
> --
> “If you are not an expert on a subject, then your opinions about it
> really do matter less than the opinions of experts. It's not
> indoctrination nor elitism. It's just that you don't know as much as
> they do about the subject.”—Tin Foil Awards
That is helpful information and it suggests that my problem may well be counterfeit Duracell or very long storage time on them. Think that I will order Toshiba and see how they work. But I'm not too hopeful since my previous calculation suggested that I would be in that area. And two heart rate monitors following the numbers agree,
> “If you are not an expert on a subject, then your opinions about it
> really do matter less than the opinions of experts. It's not
> indoctrination nor elitism. It's just that you don't know as much as
> they do about the subject.”—Tin Foil Awards
And I was using the minimum data length of 5 bytes rather than than the more likely 8 bytes. Looking it up, Flunky is sort of correct. Since ANT+ uses frequency shift keying, it has a continuous connect frequency and a one bit shifts to a higher frequency that uses more power to register a one but that connect frequency doesn't represent a zero but instead doesn't represent a one. So I would give him a 50% on his comment.
Tom Kunich
Oct 18, 2023, 1:53:55 PM10/18/23
to
AMuzi
Oct 18, 2023, 2:02:12 PM10/18/23
to
this one but it shows as only as "Article Not Found:
Newsgroup server responded: No such article number 334455"
sms
Oct 18, 2023, 3:28:49 PM10/18/23
to
On 10/18/2023 9:30 AM, Jeff Liebermann wrote:
<snip>
> A 5% failure rate means that 1 patient in 20 will have a problem.
> That's not what I would call a guaranteed success.
It also depends of the skill of the surgeon doing the surgery. With the
astigmatic lenses they have to unfold in the right orientation, and you
only get one chance. with non-astigmatic lenses there is no orientation.
I had misgivings about the first surgeon that I scheduled with even
though others had said he was fine. I canceled and switched to another
surgeon. My misgivings were a) he wanted to do both eyes at once.
b) he never advised me that one medication I take could complicate the
surgery.
c) he didn't advise astigmatic lenses for both eyes.
d) he never informed me that the astigmatic lenses cost a lot extra and
were not covered by insurance, I only found out a few days before the
surgery when Kaiser called asking for my credit card for $2000.
I was impressed with the surgeon that did my surgery. She was all
business. Not much of a bedside manner but at Kaiser they schedule so
many appointments and surgeries for each doctor that there is no time
for any niceties, nor did I need any.
<snip>
> A 5% failure rate means that 1 patient in 20 will have a problem.
> That's not what I would call a guaranteed success.
astigmatic lenses they have to unfold in the right orientation, and you
only get one chance. with non-astigmatic lenses there is no orientation.
I had misgivings about the first surgeon that I scheduled with even
though others had said he was fine. I canceled and switched to another
surgeon. My misgivings were a) he wanted to do both eyes at once.
b) he never advised me that one medication I take could complicate the
surgery.
c) he didn't advise astigmatic lenses for both eyes.
d) he never informed me that the astigmatic lenses cost a lot extra and
were not covered by insurance, I only found out a few days before the
surgery when Kaiser called asking for my credit card for $2000.
I was impressed with the surgeon that did my surgery. She was all
business. Not much of a bedside manner but at Kaiser they schedule so
many appointments and surgeries for each doctor that there is no time
for any niceties, nor did I need any.
sms
Oct 18, 2023, 3:29:27 PM10/18/23
to
On 10/18/2023 9:34 AM, Jeff Liebermann wrote:
> On Wed, 18 Oct 2023 09:30:54 -0700, Jeff Liebermann <je...@cruzio.com>
> wrote:
>
>> Oh swell. Cellphone just lit up with an earthquake alert.
>
> Nothing felt here. magnitude 4.6
> <https://earthquake.usgs.gov/earthquakes/eventpage/ew1697646550/executive>
> What else can go wrong today?
Got that too. Was waiting for shaking but it never happened.
> On Wed, 18 Oct 2023 09:30:54 -0700, Jeff Liebermann <je...@cruzio.com>
> wrote:
>
>> Oh swell. Cellphone just lit up with an earthquake alert.
>
> Nothing felt here. magnitude 4.6
> <https://earthquake.usgs.gov/earthquakes/eventpage/ew1697646550/executive>
> What else can go wrong today?
AMuzi
Oct 18, 2023, 3:34:06 PM10/18/23
to
https://www.piedmont.ca.gov/news/shake_out_earthquake_drill_october_19_2023
sms
Oct 18, 2023, 4:32:06 PM10/18/23
to
On 10/18/2023 10:06 AM, Jeff Liebermann wrote:
<snip>
<snip>
> Thanks for the offer but there is no need to send me yours. They're
> cheap enough. I think I'll order a pair now. My eyes have been
> changing enough for them to be useful. Right now, I have 3 pairs of
> glasses that I'm using. Reading, computer and driving. I'm getting a
> bit tired of juggling them and suspect that adjustable glasses might
> be useful.
Well don't expect a lot. They were of no use with my old high
> cheap enough. I think I'll order a pair now. My eyes have been
> changing enough for them to be useful. Right now, I have 3 pairs of
> glasses that I'm using. Reading, computer and driving. I'm getting a
> bit tired of juggling them and suspect that adjustable glasses might
> be useful.
prescription after just one eye was done. The doctor suggested popping
out one lens from my glasses since the vision in the eye where the lens
was replaced was good enough for most tasks. Once both eyes were done
they were useful for the six weeks that passed until I ordered and
received the new prescription glasses.
Radey Shouman
Oct 18, 2023, 4:44:44 PM10/18/23
to
Tom Kunich
Oct 18, 2023, 4:46:44 PM10/18/23
to
Tom Kunich
Oct 18, 2023, 4:48:34 PM10/18/23
to
AMuzi
Oct 18, 2023, 4:49:34 PM10/18/23
to
Tom Kunich
Oct 18, 2023, 5:05:55 PM10/18/23
to
John B.
Oct 18, 2023, 6:32:08 PM10/18/23
to
matter of engine failure I suggest that most experienced people would
ride it down. If the thing is on fire then probably they'd jump,
regardless of the odds.
--
Cheers,
John B.
Jeff Liebermann
Oct 18, 2023, 7:01:22 PM10/18/23
to
alert.
The local ham radio operators are part of the drill. I'm not
participating. I plan to stay home and oversleep:
<https://www.shakeout.org>
10 million participants in California (out of a total population of 40
million):
<https://www.shakeout.org/california/>
<https://www.shakeout.org/california/participants.php>
This is a test. This is only a test. The shaking you might be
feeling now is part of the test. Please fasten your seat belt. Do
not worry about the shaking. We are in control. We can handle any
situation. Nothing can go wrong, go wrong, go wrong, etc.
sms
Oct 18, 2023, 7:02:23 PM10/18/23
to
On 10/17/2023 5:45 PM, Jeff Liebermann wrote:
> life or having to replace batteries too often. All of the latter
> failed to disclose how many hours of riding with an HRM was involved.
> It's not the battery replacement interval that's important, but rather
> the hours of use that were provide.
We do know that CR2032 cells, like all batteries, vary widely in
capacity and quality.
We have no idea which batteries Tom is using or how many hours per day
or per week he is using the HRM. Regular people report very different
results in terms of how long their Garmin 2032 batteries last, but no
one has stated anything as short as what Tom apparently stated.
The hours between battery changes is a combination of how long the HRM
is on & transmitting and the capacity of the specific CR2032 cells being
used. The Ray-O-Vac cells are actually rated at slightly lower mAH than
the Duracell and Energizer cells. Toshiba was even less. Yet the
Ray-O-Vac and Toshiba did better in empirical testing. The performance
is also affected by the age of the new batteries.
> On Tue, 17 Oct 2023 17:23:19 -0700, sms <scharf...@geemail.com>
> wrote:
<snip>
>> If you look at the comments by regular people on the battery life of the
>> Garmin HRMs using 2032 batteries they are getting 4-12 months per battery.
>
> I saw that. However, I also saw some complains about short battery
> wrote:
<snip>
>> If you look at the comments by regular people on the battery life of the
>> Garmin HRMs using 2032 batteries they are getting 4-12 months per battery.
>
> life or having to replace batteries too often. All of the latter
> failed to disclose how many hours of riding with an HRM was involved.
> It's not the battery replacement interval that's important, but rather
> the hours of use that were provide.
We do know that CR2032 cells, like all batteries, vary widely in
capacity and quality.
We have no idea which batteries Tom is using or how many hours per day
or per week he is using the HRM. Regular people report very different
results in terms of how long their Garmin 2032 batteries last, but no
one has stated anything as short as what Tom apparently stated.
The hours between battery changes is a combination of how long the HRM
is on & transmitting and the capacity of the specific CR2032 cells being
used. The Ray-O-Vac cells are actually rated at slightly lower mAH than
the Duracell and Energizer cells. Toshiba was even less. Yet the
Ray-O-Vac and Toshiba did better in empirical testing. The performance
is also affected by the age of the new batteries.
Jeff Liebermann
Oct 18, 2023, 7:05:31 PM10/18/23
to
On Wed, 18 Oct 2023 13:48:32 -0700 (PDT), Tom Kunich
<cycl...@gmail.com> wrote:
>It will never stop shaking so you might as well go on with your life.
I use a protective talisman. I have a salt shaker for small quakes
<cycl...@gmail.com> wrote:
>It will never stop shaking so you might as well go on with your life.
and a larger pepper shaker for larger quakes. I shake both violently
to appease the earthquake gods. So far, it seems to function as
advertised.
<https://www.google.com/search?q=talisman&tbm=isch>
Jeff Liebermann
Oct 18, 2023, 7:28:12 PM10/18/23
to
On Wed, 18 Oct 2023 13:46:42 -0700 (PDT), Tom Kunich
<cycl...@gmail.com> wrote:
>Remember that the continent is moving westward and earthquakes are completely normal.
Nope. Along the San Andreas fault, the continental plate is moving
<cycl...@gmail.com> wrote:
>Remember that the continent is moving westward and earthquakes are completely normal.
south-east relative to the Pacific plate:
<https://pubs.usgs.gov/gip/earthq3/what.html>
<https://www.pnsn.org/outreach/about-earthquakes/plate-tectonics>
"The Pacific Plate is moving to the northwest at a speed of between 7
and 11 centimeters (cm) or ~3-4 inches a year. The North American
plate is moving to the west-southwest at about 2.3 cm (~1 inch) per
year..."
Not to worry. It's not your fault.
Frank Krygowski
Oct 18, 2023, 7:55:53 PM10/18/23
to
Tom obviously needs a heart rate monitor powered by a SON dynamo hub.
:-)
--
- Frank Krygowski
John B.
Oct 18, 2023, 8:46:57 PM10/18/23
to
On Wed, 18 Oct 2023 16:05:16 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
>On Wed, 18 Oct 2023 13:48:32 -0700 (PDT), Tom Kunich
><cycl...@gmail.com> wrote:
>
>>It will never stop shaking so you might as well go on with your life.
>
>I use a protective talisman. I have a salt shaker for small quakes
>and a larger pepper shaker for larger quakes. I shake both violently
>to appease the earthquake gods. So far, it seems to function as
>advertised.
><https://www.google.com/search?q=talisman&tbm=isch>
I thought that the "Gods" liked fire? Candles+Friday?
Church+Candles?Wouldn't it be more appeasing to burn down your house?
Or maybe a forest fire?
--
Cheers,
John B.
wrote:
>On Wed, 18 Oct 2023 13:48:32 -0700 (PDT), Tom Kunich
><cycl...@gmail.com> wrote:
>
>>It will never stop shaking so you might as well go on with your life.
>
>I use a protective talisman. I have a salt shaker for small quakes
>and a larger pepper shaker for larger quakes. I shake both violently
>to appease the earthquake gods. So far, it seems to function as
>advertised.
><https://www.google.com/search?q=talisman&tbm=isch>
Church+Candles?Wouldn't it be more appeasing to burn down your house?
Or maybe a forest fire?
--
Cheers,
John B.
Jeff Liebermann
Oct 18, 2023, 9:06:05 PM10/18/23
to
On Thu, 19 Oct 2023 07:46:47 +0700, John B. <sloc...@gmail.com>
sacrificial lambs are expensive and in short supply. Sacrificial
cattle were deemed to be unsuitable after what happened at Mt Sinai
when god blew up the sacrificial golden calf. I don't know where the
idea that the gods like fire came from. The gods have been casting
down surplus fire for all of recorded history. Fire was also quite
common in hell. Apparently, the gods did not like fire in their
heavenly palaces.
>Wouldn't it be more appeasing to burn down your house?
>Or maybe a forest fire?
That's what the gods to do mortals when the mortals fail to follow
instructions. Having the mortals do the same to themselves seems to
be counter productive.
wrote:
>On Wed, 18 Oct 2023 16:05:16 -0700, Jeff Liebermann <je...@cruzio.com>
>wrote:
>
>>On Wed, 18 Oct 2023 13:48:32 -0700 (PDT), Tom Kunich
>><cycl...@gmail.com> wrote:
>>
>>>It will never stop shaking so you might as well go on with your life.
>>
>>I use a protective talisman. I have a salt shaker for small quakes
>>and a larger pepper shaker for larger quakes. I shake both violently
>>to appease the earthquake gods. So far, it seems to function as
>>advertised.
>><https://www.google.com/search?q=talisman&tbm=isch>
>I thought that the "Gods" liked fire? Candles+Friday?
>Church+Candles?
Nope. The gods like burnt offerings. Unfortunately, pure white
>On Wed, 18 Oct 2023 16:05:16 -0700, Jeff Liebermann <je...@cruzio.com>
>wrote:
>
>>On Wed, 18 Oct 2023 13:48:32 -0700 (PDT), Tom Kunich
>><cycl...@gmail.com> wrote:
>>
>>>It will never stop shaking so you might as well go on with your life.
>>
>>I use a protective talisman. I have a salt shaker for small quakes
>>and a larger pepper shaker for larger quakes. I shake both violently
>>to appease the earthquake gods. So far, it seems to function as
>>advertised.
>><https://www.google.com/search?q=talisman&tbm=isch>
>I thought that the "Gods" liked fire? Candles+Friday?
>Church+Candles?
sacrificial lambs are expensive and in short supply. Sacrificial
cattle were deemed to be unsuitable after what happened at Mt Sinai
when god blew up the sacrificial golden calf. I don't know where the
idea that the gods like fire came from. The gods have been casting
down surplus fire for all of recorded history. Fire was also quite
common in hell. Apparently, the gods did not like fire in their
heavenly palaces.
>Wouldn't it be more appeasing to burn down your house?
>Or maybe a forest fire?
instructions. Having the mortals do the same to themselves seems to
be counter productive.
Jeff Liebermann
Oct 18, 2023, 9:30:45 PM10/18/23
to
On Wed, 18 Oct 2023 16:02:17 -0700, sms <scharf...@geemail.com>
wrote:
Energizer - Lithium Coin Handbook and Application Manual
<https://data.energizer.com/pdfs/lithiumcoin_appman.pdf>
See the graph on Pg 2:
"CONSTANT CURRENT DISCHARGE (3.0 mA to 0.5 mA)"
The battery capacity (in ma-hrs) is the area under each of the 4
curves. My guess(tm), the battery capacity measured at 3mA is about
twice as large when compared to 0.5mA. The effect is more pronounced
at higher current drains. My guess(tm) is most of the tests were
conduced at absurdly high current drains in order to finish the
testing within a reasonable time period. At high current, things like
contact resistance, clamping force, internal construction, and
temperature because important factors in measuring battery life. Run
the test with better sockets and lower currents and I suspect the
results will be more consistent.
Incidentally, I had a similar problem when testing LiIon 18650 cells.
I was getting erratic capacity measurements when I was using a plastic
socket with coil spring contacts. When I retests a few cells a few
times, even the same cells were producing erratic numbers. It turned
out that I wasn't getting a good connection. When I changed to
clamping the contact wires with a screw clamp, I got consistent
results.
<http://www.learnbydestroying.com/jeffl/LiPo/Ultrafire%2018650%20test.jpg>
wrote:
Energizer - Lithium Coin Handbook and Application Manual
<https://data.energizer.com/pdfs/lithiumcoin_appman.pdf>
See the graph on Pg 2:
"CONSTANT CURRENT DISCHARGE (3.0 mA to 0.5 mA)"
The battery capacity (in ma-hrs) is the area under each of the 4
curves. My guess(tm), the battery capacity measured at 3mA is about
twice as large when compared to 0.5mA. The effect is more pronounced
at higher current drains. My guess(tm) is most of the tests were
conduced at absurdly high current drains in order to finish the
testing within a reasonable time period. At high current, things like
contact resistance, clamping force, internal construction, and
temperature because important factors in measuring battery life. Run
the test with better sockets and lower currents and I suspect the
results will be more consistent.
Incidentally, I had a similar problem when testing LiIon 18650 cells.
I was getting erratic capacity measurements when I was using a plastic
socket with coil spring contacts. When I retests a few cells a few
times, even the same cells were producing erratic numbers. It turned
out that I wasn't getting a good connection. When I changed to
clamping the contact wires with a screw clamp, I got consistent
results.
<http://www.learnbydestroying.com/jeffl/LiPo/Ultrafire%2018650%20test.jpg>
Jeff Liebermann
Oct 18, 2023, 10:05:47 PM10/18/23
to
On Wed, 18 Oct 2023 19:55:47 -0400, Frank Krygowski
<frkr...@sbcglobal.net> wrote:
>OK, I've resisted long enough.
>Tom obviously needs a heart rate monitor powered by a SON dynamo hub.
>:-)
Sounds reasonable. Let's see what the numbers show for a minimalist
<frkr...@sbcglobal.net> wrote:
>OK, I've resisted long enough.
>Tom obviously needs a heart rate monitor powered by a SON dynamo hub.
>:-)
bottle dynamo.
The Garmin HRM Pro cell is suppose to last 1 year at 1 hr/day
operation for a total of 365 hrs. The CR2032 cell allegedly has a
capacity of 235ma-hrs. The DC voltage is roughly 3.0VDC:
<https://data.energizer.com/pdfs/cr2032.pdf>
That would produce:
0.235Amp-hrs / 365 hrs * 3.0VDC = 2 milliwatts.
The typical bottle dynamo can deliver 2 watts or 1,000 times the power
requirement of the HRM Pro. Since the dynamo would not be operating
continuously, a 3V super capacitor should be able to supply operating
power between stops. I'm not sure about the minimum operating voltage
of the HRM Pro. Yes, methinks it will work.
Offhand, the only problem I see is convincing the rider to run 2 wires
between the HRM Pro on his chest and the bottle dynamo on the frame.
Perhaps a propeller and PM motor/generator attached to the riders
helmet might provide sufficient power?
There is also a rechargeable version of the CR2032 cell.
<https://www.amazon.com/Rechargeable-Batteries-Lithium-Button-CR2032/dp/B07RYS4PTJ>
It should be possible to trickle charge such a battery during the ride
and also have a stable 3.0VDC power source for the HRM. Maybe charge
it with solar cells on the riders back. Logitech makes a keyboard
that uses one of these rechargeable 2032 cells. I've found that
running the cell down to zero destroys it making this scheme far from
ideal. Still, with a BMS (battery management system), the cell can be
protected from such abuse.
John B.
Oct 18, 2023, 10:19:56 PM10/18/23
to
On Wed, 18 Oct 2023 18:05:50 -0700, Jeff Liebermann <je...@cruzio.com>
Well... I had assumed from all the candle lighting that it must be a
good thing to do. The folk over here go more for garlands of flowers
then burnt offerings (:-)
--
Cheers,
John B.
good thing to do. The folk over here go more for garlands of flowers
then burnt offerings (:-)
--
Cheers,
John B.
John B.
Oct 18, 2023, 10:24:25 PM10/18/23
to
On Wed, 18 Oct 2023 19:05:33 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
Never mind all the figuring. The battery in my car remote is a CR2032
and it lasts about 3 years, which seems like plenty to me. And, if you
take it to Honda to have the battery changed it costs a bit over $1.00
in your money...
--
Cheers,
John B.
wrote:
and it lasts about 3 years, which seems like plenty to me. And, if you
take it to Honda to have the battery changed it costs a bit over $1.00
in your money...
--
Cheers,
John B.
Jeff Liebermann
Oct 18, 2023, 10:47:01 PM10/18/23
to
On Thu, 19 Oct 2023 09:19:51 +0700, John B. <sloc...@gmail.com>
wrote:
>Well... I had assumed from all the candle lighting that it must be a
>good thing to do.
The ancient Hebrews didn't have wax candles. They had (olive) oil
lamps. Wax candles arrived with the Romans.
<https://www.parkscandles.com/blog/brief-history-candle-making/>
Since the wax (tallow) was made from animal fat, it was accepted as a
cheap substitute for expensive sacrificial cattle, lambs, sheep etc.
It wasn't the fire that was important. It was the smoke and smell.
The smoke was assumed to carry the worshippers message to the gods in
heaven. The smell was meant to please or appease the gods. The fire
was just an incidental side effect.
Also, there wasn't that much candle lighting. It was every Sabbath,
Passover, and a few other holidays. It's not like the ancient Jews
were pyromaniacs. However, drinking ceremonial wine was far more
common and interesting.
The main purpose of the candles is illumination. Jewish holidays
start at sundown. The means the bulk of the celebration is done under
cover of darkness. Later, that wouldn't be much of a problem after
the invention of artificial lighting. The smell of a large
congregation in a small room after a days sweatty work surely inspired
the use of fragrant oils (Frankincense and myrrh).
>The folk over here go more for garlands of flowers
>then burnt offerings (:-)
Sure. I assume that lighting a fire during the monsoon season is
rather difficult.
wrote:
>Well... I had assumed from all the candle lighting that it must be a
>good thing to do.
lamps. Wax candles arrived with the Romans.
<https://www.parkscandles.com/blog/brief-history-candle-making/>
Since the wax (tallow) was made from animal fat, it was accepted as a
cheap substitute for expensive sacrificial cattle, lambs, sheep etc.
It wasn't the fire that was important. It was the smoke and smell.
The smoke was assumed to carry the worshippers message to the gods in
heaven. The smell was meant to please or appease the gods. The fire
was just an incidental side effect.
Also, there wasn't that much candle lighting. It was every Sabbath,
Passover, and a few other holidays. It's not like the ancient Jews
were pyromaniacs. However, drinking ceremonial wine was far more
common and interesting.
The main purpose of the candles is illumination. Jewish holidays
start at sundown. The means the bulk of the celebration is done under
cover of darkness. Later, that wouldn't be much of a problem after
the invention of artificial lighting. The smell of a large
congregation in a small room after a days sweatty work surely inspired
the use of fragrant oils (Frankincense and myrrh).
>The folk over here go more for garlands of flowers
>then burnt offerings (:-)
rather difficult.
John B.
Oct 18, 2023, 11:06:42 PM10/18/23
to
On Wed, 18 Oct 2023 19:46:46 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
Well, you do need a fire to cook the rice, which started some time ago
in this neighborhood.
--
Cheers,
John B.
wrote:
in this neighborhood.
--
Cheers,
John B.
Rolf Mantel
Oct 19, 2023, 4:08:11 AM10/19/23
to
Am 18.10.2023 um 19:02 schrieb AMuzi:
> On 10/18/2023 11:30 AM, Jeff Liebermann wrote:
> On 10/18/2023 11:30 AM, Jeff Liebermann wrote:
>> Oh swell. Cellphone just lit up with an earthquake alert.
>
>
> You would not jump out of an airplane if parachutes had a 95% success rate.
You would if the airplane was on fire ;-)
You always have to balance the sucess rate both with the 'fail' and with
the do-nothing scenario...
Is 'acceptable eyesight but pain' (fail) better or worse than 'almost
blind' (do-nothing)?
Rolf
Eric Pozharski
Oct 19, 2023, 5:33:47 AM10/19/23
to
with <ugp6j0$3pei7$3...@dont-email.me> AMuzi wrote:
> On 10/18/2023 12:53 PM, Tom Kunich wrote:
>> On Tuesday, October 17, 2023 at 5:23:22 PM UTC-7, sms wrote:
>>> On 10/17/2023 4:05 PM, Jeff Liebermann wrote:
>>>> On Tue, 17 Oct 2023 10:32:40 -0700 (PDT), Tom Kunich
>>>> <cycl...@gmail.com> wrote:
[***SKIP***]
> On 10/18/2023 12:53 PM, Tom Kunich wrote:
>> On Tuesday, October 17, 2023 at 5:23:22 PM UTC-7, sms wrote:
>>> On 10/17/2023 4:05 PM, Jeff Liebermann wrote:
>>>> On Tue, 17 Oct 2023 10:32:40 -0700 (PDT), Tom Kunich
>>>> <cycl...@gmail.com> wrote:
> I see a post from you in this thread twelve minutes prior to this one
> but it shows as only as "Article Not Found: Newsgroup server
> responded: No such article number 334455"
Our Caretaker is actively engaging various spam sources (there are many)
> but it shows as only as "Article Not Found: Newsgroup server
> responded: No such article number 334455"
originating from GG (what certainly doesn't give a fsck). There are
cases of false positives (filters are applied retroactively sometimes).
--
Torvalds' goal for Linux is very simple: World Domination
Stallman's goal for GNU is even simpler: Freedom
funkma...@hotmail.com
Oct 19, 2023, 5:48:19 AM10/19/23
to
On Wednesday, October 18, 2023 at 1:41:34 PM UTC-4, Tom Kunich wrote:
> On Tuesday, October 17, 2023 at 12:26:15 PM UTC-7, sms wrote:
> > On 10/17/2023 11:45 AM, AMuzi wrote:
> >
> > <snip>
> > > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> > > but not to my taste.
> > I have no idea what he is ranting about regarding Garmin Heart Rate
> > Monitor batteries, but if he wants to learn about how EV chargers use
> > PWM on the CP line to indicate to the vehicle how much charge current is
> > available from the mains then he can read
> > <https://www.electronicdesign.com/markets/automotive/article/21267879/electronic-design-an-introduction-to-the-sae-j1772-and-ccs-ev-charging-interfaces>.
> >
> > BTW, there is a huge difference in the quality of different 2032
> > batteries. Someone did a test
> > <https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
> > with the Ray-O-Vac and Toshiba being the best. The difference between an
> > el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
> > one case where you don't want to buy the cheapest battery 2032 cell from
> > Amazon or from a dollar store or from Harbor Freight. Even some name
> > brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
> > Panasonic).
>
> And I was using the minimum data length of 5 bytes rather than than the more likely 8 bytes. Looking it up, Flunky is sort of correct. Since ANT+ uses frequency shift keying, it has a continuous connect frequency and a one bit shifts to a higher frequency that uses more power to register a one but that connect frequency doesn't represent a zero but instead doesn't represent a one. So I would give him a 50% on his comment.
LOL....You're still wrong sparky.
- First off, What you think is called the 'connect' frequency is known as the 'carrier' frequency.
- 2nd, the carrier doesn't represent any data value in ANT or ANT+ (the carrier doesn't represent any information in any modulation scheme in regular use today that I know of, but I could be wrong).
-3rd, The protocol shifts the frequency _higher_ than the carrier for a 0 and _lower_ than the carrier for a one. The difference in the network to generate a higher frequency in FSK at that ratio (+/- 185 KHz/2.4GHz, .015 % ) is miniscule. It's likely less than the 'sleep' current used by the HRM.
> On Tuesday, October 17, 2023 at 12:26:15 PM UTC-7, sms wrote:
> > On 10/17/2023 11:45 AM, AMuzi wrote:
> >
> > <snip>
> > > I'm not an expert but I have zero interest in bio monitors or GPS. YMMV
> > > but not to my taste.
> > I have no idea what he is ranting about regarding Garmin Heart Rate
> > Monitor batteries, but if he wants to learn about how EV chargers use
> > PWM on the CP line to indicate to the vehicle how much charge current is
> > available from the mains then he can read
> > <https://www.electronicdesign.com/markets/automotive/article/21267879/electronic-design-an-introduction-to-the-sae-j1772-and-ccs-ev-charging-interfaces>.
> >
> > BTW, there is a huge difference in the quality of different 2032
> > batteries. Someone did a test
> > <https://www.youtube.com/watch?v=CxhVCmS4EX8> of 29 different 2032 cells
> > with the Ray-O-Vac and Toshiba being the best. The difference between an
> > el-cheapo 2032 and a good 2032 was 5x to 10x the battery life. This is
> > one case where you don't want to buy the cheapest battery 2032 cell from
> > Amazon or from a dollar store or from Harbor Freight. Even some name
> > brand 2032 cells didn't do very well (Energizer, Maxell, Duracell, and
> > Panasonic).
> >
> > --
> > “If you are not an expert on a subject, then your opinions about it
> > really do matter less than the opinions of experts. It's not
> > indoctrination nor elitism. It's just that you don't know as much as
> > they do about the subject.”—Tin Foil Awards
> That is helpful information and it suggests that my problem may well be counterfeit Duracell or very long storage time on them. Think that I will order Toshiba and see how they work. But I'm not too hopeful since my previous calculation suggested that I would be in that area. And two heart rate monitors following the numbers agree,
> > --
> > “If you are not an expert on a subject, then your opinions about it
> > really do matter less than the opinions of experts. It's not
> > indoctrination nor elitism. It's just that you don't know as much as
> > they do about the subject.”—Tin Foil Awards
>
> And I was using the minimum data length of 5 bytes rather than than the more likely 8 bytes. Looking it up, Flunky is sort of correct. Since ANT+ uses frequency shift keying, it has a continuous connect frequency and a one bit shifts to a higher frequency that uses more power to register a one but that connect frequency doesn't represent a zero but instead doesn't represent a one. So I would give him a 50% on his comment.
LOL....You're still wrong sparky.
- First off, What you think is called the 'connect' frequency is known as the 'carrier' frequency.
- 2nd, the carrier doesn't represent any data value in ANT or ANT+ (the carrier doesn't represent any information in any modulation scheme in regular use today that I know of, but I could be wrong).
-3rd, The protocol shifts the frequency _higher_ than the carrier for a 0 and _lower_ than the carrier for a one. The difference in the network to generate a higher frequency in FSK at that ratio (+/- 185 KHz/2.4GHz, .015 % ) is miniscule. It's likely less than the 'sleep' current used by the HRM.
funkma...@hotmail.com
Oct 19, 2023, 5:50:29 AM10/19/23
to
On Wednesday, October 18, 2023 at 7:28:12 PM UTC-4, Jeff Liebermann wrote:
> On Wed, 18 Oct 2023 13:46:42 -0700 (PDT), Tom Kunich
> <cycl...@gmail.com> wrote:
>
> >Remember that the continent is moving westward and earthquakes are completely normal.
> Nope. Along the San Andreas fault, the continental plate is moving
> south-east relative to the Pacific plate:
> <https://pubs.usgs.gov/gip/earthq3/what.html>
> <https://www.pnsn.org/outreach/about-earthquakes/plate-tectonics>
> "The Pacific Plate is moving to the northwest at a speed of between 7
> and 11 centimeters (cm) or ~3-4 inches a year. The North American
> plate is moving to the west-southwest at about 2.3 cm (~1 inch) per
> year..."
>
> Not to worry. It's not your fault.
lol...I see what you did there...
> On Wed, 18 Oct 2023 13:46:42 -0700 (PDT), Tom Kunich
> <cycl...@gmail.com> wrote:
>
> >Remember that the continent is moving westward and earthquakes are completely normal.
> Nope. Along the San Andreas fault, the continental plate is moving
> south-east relative to the Pacific plate:
> <https://pubs.usgs.gov/gip/earthq3/what.html>
> <https://www.pnsn.org/outreach/about-earthquakes/plate-tectonics>
> "The Pacific Plate is moving to the northwest at a speed of between 7
> and 11 centimeters (cm) or ~3-4 inches a year. The North American
> plate is moving to the west-southwest at about 2.3 cm (~1 inch) per
> year..."
>
> Not to worry. It's not your fault.
funkma...@hotmail.com
Oct 19, 2023, 5:55:42 AM10/19/23
to
On Tuesday, October 17, 2023 at 9:20:42 PM UTC-4, Jeff Liebermann wrote:
> On Wed, 18 Oct 2023 07:31:23 +0700, John B. <sloc...@gmail.com>
> wrote:
> >When listening to Tommy, just imagine that you are carrying those
> >heavy stone slabs down from the mountain and there's Tommy with his
> >Gilded Calf.
> The ancient Egyptians prized their gold and would not have allowed any
> to leave the country. Meanwhile, over the centuries, the size of the
> biblical golden calf may have been exaggerated.
>
> "Archeologists Unearth 'Golden Calf' in Israel"
> <https://www.nytimes.com/1990/07/25/world/archeologists-unearth-golden-calf-in-israel.html>
> "The calf is about 4 1/2 inches long, 4 1/4 inches tall and weighs
> just under one pound."
>
> "The Ten Commandments(1956) - Moses Throws The Tablets At The Golden
> Calf" (4:09)
> <https://www.youtube.com/watch?v=Nns9HfOM-Ro>
Then there's this 6 foot tall idol:
https://people.com/politics/golden-statue-of-donald-trump-is-being-wheeled-around-cpac/
>
> We probably should also downsize the "heavy stone tablet" that Moses
> dragged down the mountain (twice) to something lighter and more
> suitable for desert wandering. The tablets looked fairly light weight
> in the movie clip. Gold is really nice, but if it's too heavy, one is
> likely to lose it during an escape from Egypt.
>
> That begs the question as to why a small golden calf and not a huge
> golden bull?
> Hint: If you double the size of the golden calf, the weight goes up 8
> times (two cubed).
> >Unfortunately your staff must be broken as repeatedly striking him
> >with it doesn't seem to produce water... or truth.
> I didn't expect or want water. I wanted blood.
>
> Doing something repeatedly and expecting different results is a good
> definition of insanity. My most effective method of beating Tom about
> the ears is to use his own written words against him. I can usually
> see an effect, but it doesn't last. He just returns awaiting further
> beatings.
> On Wed, 18 Oct 2023 07:31:23 +0700, John B. <sloc...@gmail.com>
> wrote:
> >When listening to Tommy, just imagine that you are carrying those
> >heavy stone slabs down from the mountain and there's Tommy with his
> >Gilded Calf.
> The ancient Egyptians prized their gold and would not have allowed any
> to leave the country. Meanwhile, over the centuries, the size of the
> biblical golden calf may have been exaggerated.
>
> "Archeologists Unearth 'Golden Calf' in Israel"
> <https://www.nytimes.com/1990/07/25/world/archeologists-unearth-golden-calf-in-israel.html>
> "The calf is about 4 1/2 inches long, 4 1/4 inches tall and weighs
> just under one pound."
>
> "The Ten Commandments(1956) - Moses Throws The Tablets At The Golden
> Calf" (4:09)
> <https://www.youtube.com/watch?v=Nns9HfOM-Ro>
Then there's this 6 foot tall idol:
https://people.com/politics/golden-statue-of-donald-trump-is-being-wheeled-around-cpac/
>
> We probably should also downsize the "heavy stone tablet" that Moses
> dragged down the mountain (twice) to something lighter and more
> suitable for desert wandering. The tablets looked fairly light weight
> in the movie clip. Gold is really nice, but if it's too heavy, one is
> likely to lose it during an escape from Egypt.
>
> That begs the question as to why a small golden calf and not a huge
> golden bull?
> Hint: If you double the size of the golden calf, the weight goes up 8
> times (two cubed).
> >Unfortunately your staff must be broken as repeatedly striking him
> >with it doesn't seem to produce water... or truth.
> I didn't expect or want water. I wanted blood.
>
> Doing something repeatedly and expecting different results is a good
> definition of insanity. My most effective method of beating Tom about
> the ears is to use his own written words against him. I can usually
> see an effect, but it doesn't last. He just returns awaiting further
> beatings.
Jeff Liebermann
Oct 19, 2023, 11:09:20 AM10/19/23
to
On Thu, 19 Oct 2023 02:55:40 -0700 (PDT), "funkma...@hotmail.com"
<funkma...@hotmail.com> wrote:
>On Tuesday, October 17, 2023 at 9:20:42?PM UTC-4, Jeff Liebermann wrote:
>> "The Ten Commandments(1956) - Moses Throws The Tablets At The Golden
>> Calf" (4:09)
>> <https://www.youtube.com/watch?v=Nns9HfOM-Ro>
>
>Then there's this 6 foot tall idol:
>https://people.com/politics/golden-statue-of-donald-trump-is-being-wheeled-around-cpac/
One asking price is $95 million dollars for the effigy:
<https://www.yessy.com/tomzegan/index.html>
<https://www.yessy.com/tomzegan/index.html?i=22230>
<https://www.yessy.com/tomzegan/TrumpStatue.html>
There are apparently clones of the statue available:
<https://trumpstatue.net>
I'm uncertain as to who sculpted the original statue.
"Sculptor of Donald Trump's presidential statue wants to be fair and
objective"
<https://listen.sdpb.org/arts-and-culture/2021-10-08/sculptor-of-donald-trumps-presidential-statue-wants-to-be-fair-and-objective>
Of course, the left coast has it's own version:
<https://en.wikipedia.org/wiki/The_Emperor_Has_No_Balls>
Then, there's the 16ft tall version:
<https://en.wikipedia.org/wiki/Dump_Trump_(statue)>
In an attempt to appeal to his few remaining friends in the far east,
yet another statue:
<https://en.wikipedia.org/wiki/Trump_Buddha>
Hmmm...
- The sculptor has his studio in nearby San Ysidro, CA.
- His first name is the same as the famous Tom from RBT.
- The Trump statue is 6ft 3in tall. Tom is 6ft 4in tall.
- The statue is plated with Spectra Chrome fake gold:
<https://trumpstatue.net/chroming>
Could it be that Tom Kunich posed for the original statue?
<funkma...@hotmail.com> wrote:
>On Tuesday, October 17, 2023 at 9:20:42?PM UTC-4, Jeff Liebermann wrote:
>> "The Ten Commandments(1956) - Moses Throws The Tablets At The Golden
>> Calf" (4:09)
>> <https://www.youtube.com/watch?v=Nns9HfOM-Ro>
>
>Then there's this 6 foot tall idol:
>https://people.com/politics/golden-statue-of-donald-trump-is-being-wheeled-around-cpac/
<https://www.yessy.com/tomzegan/index.html>
<https://www.yessy.com/tomzegan/index.html?i=22230>
<https://www.yessy.com/tomzegan/TrumpStatue.html>
There are apparently clones of the statue available:
<https://trumpstatue.net>
I'm uncertain as to who sculpted the original statue.
"Sculptor of Donald Trump's presidential statue wants to be fair and
objective"
<https://listen.sdpb.org/arts-and-culture/2021-10-08/sculptor-of-donald-trumps-presidential-statue-wants-to-be-fair-and-objective>
Of course, the left coast has it's own version:
<https://en.wikipedia.org/wiki/The_Emperor_Has_No_Balls>
Then, there's the 16ft tall version:
<https://en.wikipedia.org/wiki/Dump_Trump_(statue)>
In an attempt to appeal to his few remaining friends in the far east,
yet another statue:
<https://en.wikipedia.org/wiki/Trump_Buddha>
Hmmm...
- The sculptor has his studio in nearby San Ysidro, CA.
- His first name is the same as the famous Tom from RBT.
- The Trump statue is 6ft 3in tall. Tom is 6ft 4in tall.
- The statue is plated with Spectra Chrome fake gold:
<https://trumpstatue.net/chroming>
Could it be that Tom Kunich posed for the original statue?
Tom Kunich
Oct 19, 2023, 11:39:17 AM10/19/23
to
So I can see no way in hell that they can rate them for 500 hours rather than the observed 40 or 50 hours.
Jeff Liebermann
Oct 19, 2023, 12:36:04 PM10/19/23
to
On Wed, 18 Oct 2023 10:53:53 -0700 (PDT), Tom Kunich
<cycl...@gmail.com> wrote:
>I wonder how Liebermann overlooked my saying that my heart rate monitors are the HRM1G. I suppose he doesn't read responses to Lou.
I don't read every posting in RBT. At 100+ messages per day, I don't
believe anyone reads every message (except perhaps your secret agent
who monitors RBT and provides you with messages that were filtered by
your non-existent killfile). I often skip through threads looking for
articles of interest. If I don't see anything interesting, mark the
entire section as having been read and move on. If you had inserted a
comment about owning two Garmin HRM1G devices into a message that I
consider to be of little interest, I would have missed it.
I'm not finding much information on the HRM1G because Garmin refers to
it as just the "Heart Rate Monitor".
<https://support.garmin.com/en-US/?faq=uMTzpPYu9a3KWAoFEtqWqA>
<https://support.garmin.com/en-US/?productID=10996&tab=topics>
It's ANT+ only and does not support BLE. It seems to be intended for
running, but should work for cycling. The documentation date is 2009
to 2011 making it 12 to 15 years old.
In the instructions,
<https://static.garmin.com/pumac/HRM_Instructions_Web.pdf>
it declares:
"Battery Life: approximately 3 years (1 hour per day)".
That would be:
365 days/year * 3 years = 1095 hrs
of continuous operation.
Methinks your claim of repeated 2 to 3 day battery life might suggest
that you are the owner of a lifetime supply of dead CR2032 cells or
that your 12 to 15 year old devices might have experienced a component
failure. Open the HRM and inspect both sides of the PCB (printed
circuit board) for corrosion. The HRM might be resistant to water
incursion, but 15 years of condensation and sweat can do considerable
damage to the PCB.
<cycl...@gmail.com> wrote:
>I wonder how Liebermann overlooked my saying that my heart rate monitors are the HRM1G. I suppose he doesn't read responses to Lou.
I don't read every posting in RBT. At 100+ messages per day, I don't
believe anyone reads every message (except perhaps your secret agent
who monitors RBT and provides you with messages that were filtered by
your non-existent killfile). I often skip through threads looking for
articles of interest. If I don't see anything interesting, mark the
entire section as having been read and move on. If you had inserted a
comment about owning two Garmin HRM1G devices into a message that I
consider to be of little interest, I would have missed it.
I'm not finding much information on the HRM1G because Garmin refers to
it as just the "Heart Rate Monitor".
<https://support.garmin.com/en-US/?faq=uMTzpPYu9a3KWAoFEtqWqA>
<https://support.garmin.com/en-US/?productID=10996&tab=topics>
It's ANT+ only and does not support BLE. It seems to be intended for
running, but should work for cycling. The documentation date is 2009
to 2011 making it 12 to 15 years old.
In the instructions,
<https://static.garmin.com/pumac/HRM_Instructions_Web.pdf>
it declares:
"Battery Life: approximately 3 years (1 hour per day)".
That would be:
365 days/year * 3 years = 1095 hrs
of continuous operation.
Methinks your claim of repeated 2 to 3 day battery life might suggest
that you are the owner of a lifetime supply of dead CR2032 cells or
that your 12 to 15 year old devices might have experienced a component
failure. Open the HRM and inspect both sides of the PCB (printed
circuit board) for corrosion. The HRM might be resistant to water
incursion, but 15 years of condensation and sweat can do considerable
damage to the PCB.
Jeff Liebermann
Oct 19, 2023, 1:01:02 PM10/19/23
to
On Thu, 19 Oct 2023 09:35:49 -0700, Jeff Liebermann <je...@cruzio.com>
wrote:
>On Wed, 18 Oct 2023 10:53:53 -0700 (PDT), Tom Kunich
><cycl...@gmail.com> wrote:
>
>>I wonder how Liebermann overlooked my saying that my heart rate monitors are the HRM1G. I suppose he doesn't read responses to Lou.
>
>I don't read every posting in RBT. At 100+ messages per day, I don't
>believe anyone reads every message (except perhaps your secret agent
>who monitors RBT and provides you with messages that were filtered by
>your non-existent killfile). I often skip through threads looking for
>articles of interest. If I don't see anything interesting, mark the
>entire section as having been read and move on. If you had inserted a
>comment about owning two Garmin HRM1G devices into a message that I
>consider to be of little interest, I would have missed it.
Well, for once you're right. You did post that your heart rate
monitors were HRM1G in a discussion with Lou.
10/11/2023
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/Lv__p5JfBQAJ>
"That says "premium" and it doesn't look like mine which are both
HRM1G and have a different type of belt on them."
It's in the middle of some articles which I certainly would have
considered interesting and to which I also added my comments. I
should have noticed the model number, but for reasons unknown, missed
the reference. Perhaps if you had replied directly to my questions,
instead of burying your answer in a reply to someone else, I might
have better noticed your reply.
wrote:
>On Wed, 18 Oct 2023 10:53:53 -0700 (PDT), Tom Kunich
><cycl...@gmail.com> wrote:
>
>>I wonder how Liebermann overlooked my saying that my heart rate monitors are the HRM1G. I suppose he doesn't read responses to Lou.
>
>I don't read every posting in RBT. At 100+ messages per day, I don't
>believe anyone reads every message (except perhaps your secret agent
>who monitors RBT and provides you with messages that were filtered by
>your non-existent killfile). I often skip through threads looking for
>articles of interest. If I don't see anything interesting, mark the
>entire section as having been read and move on. If you had inserted a
>comment about owning two Garmin HRM1G devices into a message that I
>consider to be of little interest, I would have missed it.
monitors were HRM1G in a discussion with Lou.
10/11/2023
<https://groups.google.com/g/rec.bicycles.tech/c/xG9YY3PHgFc/m/Lv__p5JfBQAJ>
"That says "premium" and it doesn't look like mine which are both
HRM1G and have a different type of belt on them."
It's in the middle of some articles which I certainly would have
considered interesting and to which I also added my comments. I
should have noticed the model number, but for reasons unknown, missed
the reference. Perhaps if you had replied directly to my questions,
instead of burying your answer in a reply to someone else, I might
have better noticed your reply.
Tim R
Oct 23, 2023, 9:06:25 AM10/23/23
to
On Wednesday, October 18, 2023 at 1:07:05 PM UTC-4, Jeff Liebermann wrote:
> However, I'm also tempted to do my own prescriptions using trial
> lenses and a trial lens frame:
> <https://www.ebay.com/sch/i.html?_nkw=optometrist+trial+lens+frame>
> <https://www.ebay.com/itm/186111879094>
> and then order glasses from Zenni Optical. An exam currently costs me
> $105 at Costco, making the do-it-myself option a tolerable
> alternative. Feel free to tell me I'm insane.
For music readers, I bought one of every strength the dollar store had, and did each eye alone.
It turned out I could pop the left lens out and just use the right one when I found the right strength.
Trial and error works.
My correct prescription is probably in between the standard .25 diopter difference. My eye doctor insists I can't tell the difference and that's why they won't make those sizes.
> However, I'm also tempted to do my own prescriptions using trial
> lenses and a trial lens frame:
> <https://www.ebay.com/sch/i.html?_nkw=optometrist+trial+lens+frame>
> <https://www.ebay.com/itm/186111879094>
> and then order glasses from Zenni Optical. An exam currently costs me
> $105 at Costco, making the do-it-myself option a tolerable
> alternative. Feel free to tell me I'm insane.
For music readers, I bought one of every strength the dollar store had, and did each eye alone.
It turned out I could pop the left lens out and just use the right one when I found the right strength.
Trial and error works.
My correct prescription is probably in between the standard .25 diopter difference. My eye doctor insists I can't tell the difference and that's why they won't make those sizes.
sms
Oct 23, 2023, 12:43:22 PM10/23/23
to
ordered from them it took two weeks to get the glasses. The first time
it was four days. I got three pairs, one distance, one computer, and one
tinted. Total was about $180.
Costco seems to have gone up-market in regards to their frames and is no
longer a good option. They are also moving to the Zenni model of online
ordering as an option.
You might also check https://www.americasbest.com/ which is $79.95 for
an exam and two pairs of basic glasses (no extras included). They have a
store in Marina and in San Jose.
Jeff Liebermann
Oct 23, 2023, 2:15:02 PM10/23/23
to
On Mon, 23 Oct 2023 06:06:23 -0700 (PDT), Tim R
<timoth...@gmail.com> wrote:
>On Wednesday, October 18, 2023 at 1:07:05?PM UTC-4, Jeff Liebermann wrote:
>> However, I'm also tempted to do my own prescriptions using trial
>> lenses and a trial lens frame:
>> <https://www.ebay.com/sch/i.html?_nkw=optometrist+trial+lens+frame>
>> <https://www.ebay.com/itm/186111879094>
>> and then order glasses from Zenni Optical. An exam currently costs me
>> $105 at Costco, making the do-it-myself option a tolerable
>> alternative. Feel free to tell me I'm insane.
>For music readers,
For music (keyboard), I have an easy solution. I play everything by
ear and can barely read sheet music. I can also play horribly well
with my eyes closed. No need for glasses. Some MP3 files from about
20 years ago:
<http://802.11junk.com/jeffl/music/>
>I bought one of every strength the dollar store had, and did each eye alone.
I did the same thing. Fortunately, both my eyes the same. Then I
discovered that the interpupilary distance for the dollar store
glasses did not match my eye spacing. I also have astigmatism. The
low magnification glasses ( less than +2.00 diopters) worked well, but
the higher magnifications, for close up work, did not. Also, the
depth of field varies with the magnification. However, it worked for
everything except driving for 30+ years. As I become older, I needed
more magnification, which reduced the depth of field. I still use
+2.00 diopter dollar store glasses for reading.
That worked fairly well until cataracts became a problem. At this
time, none of my glasses work perfectly. I decided NOT to order yet
another pair of glasses because the problem was not the astigmatism
that the prescription glasses were intended to repair, but rather
blurry vision, double vision, dim vision, glare and "sparklers" on
bright lights.
I was going to post a photo of my large collection of dollar store and
prescription glasses but decided it would be too much work.
>It turned out I could pop the left lens out and just use the right one when I found the right strength.
>Trial and error works.
That's also what I did.
>My correct prescription is probably in between the standard .25 diopter difference. My eye doctor insists I can't tell the difference and that's why they won't make those sizes.
I could definitely see the difference between 0.25 diopter gradations.
My method was to select a magnification that matched my desired depth
of field. Measurement was easy and could be done in the store. I
brought with me a fine print page, selected a magnification, borrowed
a yard stick, and moved back and forth to determine where things would
seem out off focus. The test is best done in somewhat dim light. I
would then buy the power that worked best at my target distance. After
testing my choice at home, I would return to the dollar store and buy
as many identical glasses (so I could interchange lenses) as possible.
<timoth...@gmail.com> wrote:
>On Wednesday, October 18, 2023 at 1:07:05?PM UTC-4, Jeff Liebermann wrote:
>> However, I'm also tempted to do my own prescriptions using trial
>> lenses and a trial lens frame:
>> <https://www.ebay.com/sch/i.html?_nkw=optometrist+trial+lens+frame>
>> <https://www.ebay.com/itm/186111879094>
>> and then order glasses from Zenni Optical. An exam currently costs me
>> $105 at Costco, making the do-it-myself option a tolerable
>> alternative. Feel free to tell me I'm insane.
>For music readers,
ear and can barely read sheet music. I can also play horribly well
with my eyes closed. No need for glasses. Some MP3 files from about
20 years ago:
<http://802.11junk.com/jeffl/music/>
>I bought one of every strength the dollar store had, and did each eye alone.
discovered that the interpupilary distance for the dollar store
glasses did not match my eye spacing. I also have astigmatism. The
low magnification glasses ( less than +2.00 diopters) worked well, but
the higher magnifications, for close up work, did not. Also, the
depth of field varies with the magnification. However, it worked for
everything except driving for 30+ years. As I become older, I needed
more magnification, which reduced the depth of field. I still use
+2.00 diopter dollar store glasses for reading.
That worked fairly well until cataracts became a problem. At this
time, none of my glasses work perfectly. I decided NOT to order yet
another pair of glasses because the problem was not the astigmatism
that the prescription glasses were intended to repair, but rather
blurry vision, double vision, dim vision, glare and "sparklers" on
bright lights.
I was going to post a photo of my large collection of dollar store and
prescription glasses but decided it would be too much work.
>It turned out I could pop the left lens out and just use the right one when I found the right strength.
>Trial and error works.
>My correct prescription is probably in between the standard .25 diopter difference. My eye doctor insists I can't tell the difference and that's why they won't make those sizes.
My method was to select a magnification that matched my desired depth
of field. Measurement was easy and could be done in the store. I
brought with me a fine print page, selected a magnification, borrowed
a yard stick, and moved back and forth to determine where things would
seem out off focus. The test is best done in somewhat dim light. I
would then buy the power that worked best at my target distance. After
testing my choice at home, I would return to the dollar store and buy
as many identical glasses (so I could interchange lenses) as possible.
Tim R
Oct 23, 2023, 8:28:59 PM10/23/23
to
On Monday, October 23, 2023 at 2:15:02 PM UTC-4, Jeff Liebermann wrote:
> I could definitely see the difference between 0.25 diopter gradations.
> My method was to select a magnification that matched my desired depth
> of field. Measurement was easy and could be done in the store. I
> brought with me a fine print page, selected a magnification, borrowed
> a yard stick, and moved back and forth to determine where things would
> seem out off focus. The test is best done in somewhat dim light. I
> I could definitely see the difference between 0.25 diopter gradations.
> My method was to select a magnification that matched my desired depth
> of field. Measurement was easy and could be done in the store. I
> brought with me a fine print page, selected a magnification, borrowed
> a yard stick, and moved back and forth to determine where things would
> seem out off focus. The test is best done in somewhat dim light. I
> --
> Jeff Liebermann je...@cruzio.com
> PO Box 272 http://www.LearnByDestroying.com
> Ben Lomond CA 95005-0272
> Skype: JeffLiebermann AE6KS 831-336-2558
This is actually a crude way of doing your own eye test.
> Jeff Liebermann je...@cruzio.com
> PO Box 272 http://www.LearnByDestroying.com
> Ben Lomond CA 95005-0272
> Skype: JeffLiebermann AE6KS 831-336-2558
Your prescription for intermediate distance is supposed to take your Sphere (from your exam) plus your D, your ADD in diopters.
The D is supposed to equal 1/d where d is distance in meters.
So if you took your dollar store known D and determined the exact distance in meters where you got the clearest focus, you should be able to back calculate your prescription. Better yet, since you have a collection of different D's you should be able to measure the focus for each one and see if they converge on a Sphere prescription.
I have tried this of course and did not get consistent results that matched my eye doctor, so I'm not sure why it goes wrong sometimes. But I don't see why it shouldn't work.
Jeff Liebermann
Oct 23, 2023, 11:07:21 PM10/23/23
to
On Mon, 23 Oct 2023 17:28:56 -0700 (PDT), Tim R
<timoth...@gmail.com> wrote:
>On Monday, October 23, 2023 at 2:15:02?PM UTC-4, Jeff Liebermann wrote:
>> I could definitely see the difference between 0.25 diopter gradations.
>> My method was to select a magnification that matched my desired depth
>> of field. Measurement was easy and could be done in the store. I
>> brought with me a fine print page, selected a magnification, borrowed
>> a yard stick, and moved back and forth to determine where things would
>> seem out off focus. The test is best done in somewhat dim light. I
correct. However, when distance and close-up vision become
problematic, it's really a measure of how well the ciliary muscles are
functioning in adjusting the shape of the eye lens for distance.
>Your prescription for intermediate distance is supposed to take your Sphere (from your exam) plus your D, your ADD in diopters.
>The D is supposed to equal 1/d where d is distance in meters.
>
>So if you took your dollar store known D and determined the exact distance in meters where you got the clearest focus, you should be able to back calculate your prescription. Better yet, since you have a collection of different D's you should be able to measure the focus for each one and see if they converge on a Sphere prescription.
Thanks. I'll see what the calculations produce. However, at this
point, it won't help me much. In the last 2 years, I've had my eyes
tested 4 times and orders 3 sets of eyeglasses. They all worked for a
few months, until my eyes changed again. I've been advised by
literally everyone involved that I should give up solving my vision
problems with a better prescription and concentrate on the cataract
problem. $40 to test the latest prescription is cheap enough, but the
probability of it showing or doing anything useful is very low.
Incidentally, I would order bifocals for distance and dashboard
vision. Also bifocals for computer screen and keyboard vision. When
I ordered them using the adder from the prescription, the result was
the closeup distance was about 6 inches. I had to adjust the adder
for literally every bifocal glasses I've ordered in about the last 30
years. This goes way back to before they were using computers to
generate the prescription. I've asked, but haven't received a
satisfactory (or believable) explanation.
>I have tried this of course and did not get consistent results that matched my eye doctor, so I'm not sure why it goes wrong sometimes. But I don't see why it shouldn't work.
It seems logical. My guess(tm) is that the depth of field measurement
varies with whether the iris is open or partially closed as controlled
by ambient light intensity.
<timoth...@gmail.com> wrote:
>On Monday, October 23, 2023 at 2:15:02?PM UTC-4, Jeff Liebermann wrote:
>> I could definitely see the difference between 0.25 diopter gradations.
>> My method was to select a magnification that matched my desired depth
>> of field. Measurement was easy and could be done in the store. I
>> brought with me a fine print page, selected a magnification, borrowed
>> a yard stick, and moved back and forth to determine where things would
>> seem out off focus. The test is best done in somewhat dim light. I
>This is actually a crude way of doing your own eye test.
If everything in my eyes were working as expected, that would be
correct. However, when distance and close-up vision become
problematic, it's really a measure of how well the ciliary muscles are
functioning in adjusting the shape of the eye lens for distance.
>Your prescription for intermediate distance is supposed to take your Sphere (from your exam) plus your D, your ADD in diopters.
>The D is supposed to equal 1/d where d is distance in meters.
>
>So if you took your dollar store known D and determined the exact distance in meters where you got the clearest focus, you should be able to back calculate your prescription. Better yet, since you have a collection of different D's you should be able to measure the focus for each one and see if they converge on a Sphere prescription.
point, it won't help me much. In the last 2 years, I've had my eyes
tested 4 times and orders 3 sets of eyeglasses. They all worked for a
few months, until my eyes changed again. I've been advised by
literally everyone involved that I should give up solving my vision
problems with a better prescription and concentrate on the cataract
problem. $40 to test the latest prescription is cheap enough, but the
probability of it showing or doing anything useful is very low.
Incidentally, I would order bifocals for distance and dashboard
vision. Also bifocals for computer screen and keyboard vision. When
I ordered them using the adder from the prescription, the result was
the closeup distance was about 6 inches. I had to adjust the adder
for literally every bifocal glasses I've ordered in about the last 30
years. This goes way back to before they were using computers to
generate the prescription. I've asked, but haven't received a
satisfactory (or believable) explanation.
>I have tried this of course and did not get consistent results that matched my eye doctor, so I'm not sure why it goes wrong sometimes. But I don't see why it shouldn't work.
varies with whether the iris is open or partially closed as controlled
by ambient light intensity.
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