I am taking french classes and we have to do a presentation about a
subject of our choice. I would like to do it about relativity, you
know the fascinating side of it.
So does anybody have any pointers on where to start? Maybe some
slides?
Please keep in mind, that my audience does not know who Euclid is, let
alone know what a non euclidean geometry is :)
thanks
fmardini
"Start at the very beginning, a very good place to start." Julie Andrews, I
think
it was, that sang that.
Anyway, here's what you are looking for.
http://www.androcles01.pwp.blueyonder.co.uk/Smart/Smart.htm
looks interesting but with i see a lot of equations and i am sure they
ain't gonna like that
i was thinking along the lines of discussing some of the consequences
of the theory of relativity that could be appreciated by the layman --
the space time continuum, gravity, etc.
I was planning on leading with the question "Do clocks measure time,
or is time that what clocks measure??!"
As opposed to the mundane side of it? Special (c=c G=0, h=0) or
General (c=c G=G, h=0) Relativity?
> So does anybody have any pointers on where to start? Maybe some
> slides?
Google Images. Good luck with that.
Newtonian physics assumes information about a system is instantly
knowable. Relativity is Newtonian physics rederived with information
having a finite maximum propagation speed, the speed of light in
vacuum, lightspeed, c. Everything else is contingent details.
Birth of science - theory surviving empirical observation: Galilei,
Galileo. "Discorsi e Dimostrazioni Matematiche Intorno a Due Nuove
Scienze" (Appresso gli Elsevirii, Leida: 1638)
Codification of science - empirical reality is exactly modeled by
mathematics: Newton, Isaac; 1687, "Philosophiae Naturalis Principia
Mathematica"
Correction - lightspeed must be finite and unique: James Clark
Maxwell, 1850s, then Lorentz.
http://en.wikipedia.org/wiki/Lorentz_covariance
http://www.ph.man.ac.uk/~mikeb/lecture/pc167/relativity/lorentz.html
http://arxiv.org/abs/hep-ph/0106036
Synthesis of science - Newton rederived to be consistent with
Maxwell: Einstein, Albert, Annalen der Physik 4 XVII 891-921 (1905)
(Newton except for gravitation), then Annalen der Physik 4 XLIX
769-822 (1916) (Newton including gravitation)
http://www.fourmilab.ch/etexts/einstein/specrel/www/
Einstein translated to English
http://www.mathpages.com/rr/rrtoc.htm
Brief overview
> Please keep in mind, that my audience does not know who Euclid is, let
> alone know what a non euclidean geometry is :)
There is a minimum entrance fee here. If you may not write equations
you are well and truly screwed. Newton was wrong. The truth is not
obvious nor can it be trivially described.
http://arXiv.org/abs/hep-th/0111236
Geometric structure of reality
http://bkocay.cs.umanitoba.ca/Students/Theory.html
The distorted cube
<http://relativity.livingreviews.org/open?pubNo=lrr-2003-1&page=node5.html>
Relativistic effects on orbital clocks
http://arXiv.org/abs/gr-qc/9909014
falling light
<http://en.wikipedia.org/wiki/Hafele-Keating_experiment>
<http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/airtim.html>
<http://metrologyforum.tm.agilent.com/pdf/flying_clock_math.pdf>
http://metrologyforum.tm.agilent.com/cesium.shtml
http://arxiv.org/abs/physics/0008012
Hafele-Keating Experiment
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
It's got pictures. <shrug>
It's also got:
'we establish by definition that the "time" required by light to travel from
A to B equals the "time" it requires to travel from B to A' because I SAY SO
and I'm
the great genius Einstein, YOU STUPID LITTLE PEOPLE. -- Albert Einstein.
Then the equations begin and out pops all the crank stuff you want to
talk about but don't understand because you are layman.
That's relativity for the non-scientific.
Why not talk about horoscopes and palmistry and black magic,
it's just as stupid to listen to Madame Gaga with her crystal ball
as any relativist?
>
>"fmardini" <f.ma...@gmail.com> wrote in message
>news:1187554983....@d55g2000hsg.googlegroups.com...
>:> "Start at the very beginning, a very good place to start." Julie Andrews,
>I
>: indeed it is :)
>: > think
>: > it was, that sang that.
>: > Anyway, here's what you are looking for.
>: > http://www.androcles01.pwp.blueyonder.co.uk/Smart/Smart.htm
>:
>: looks interesting but with i see a lot of equations and i am sure they
>: ain't gonna like that
>: i was thinking along the lines of discussing some of the consequences
>: of the theory of relativity that could be appreciated by the layman --
>: the space time continuum, gravity, etc.
>: I was planning on leading with the question "Do clocks measure time,
>: or is time that what clocks measure??!"
>
>It's got pictures. <shrug>
>It's also got:
>
>'we establish by definition that the "time" required by light to travel from
>A to B equals the "time" it requires to travel from B to A' because I SAY SO
Androcles says so:
A train moves from London to Birmingham (A to B) and returns to London
(B to A) in NO time, because when you come later and look, the train
is "still" here in London. The time and distance the train travelled
are exactly ZERO ZERO in Androcles' math.
Then Androcles concludes: (average velocity) v = 0 / 0.
Which is the famous Androcles "division by zero", check his webpages.
w.
>>
>You will not be invited by Prof. Mardini to the Grotta Azzura
>on Capri.
'been there.
(With or without without professors, quite a boring place)
> Andor will be,
Be what? He is, has been, will be?
> while you are driven by your Sucht to
>continue to distrub grave sites and continue to wabnigger yourself.
>Have fun, Wabie... ahaha... Thanks for the laughs... ahahanson
How's your ticket to the Grotta? Let's meet there.
w.
"A train moves from London to Birmingham" -- Wabnigga.
Nope. A train moves from Inwood-207 St. to Far Rockaway on
the New York subway.
http://subway.umka.org/maps/new-york.gif
You are absolutely right, Wabnigga put in Birmingham, but we'll
never know why.
As far as Einstein goes, the distance AB is UNDEFINED and
so is the time of arrival/departure at B, but the A train will
certainly have to stop at B so it cannot possibly have constant
velocity.
The difference between mathematics and physics is the
word "assume" doesn't exist in mathematics. Wabbie will
never be a mathematician, he's just another opinionated bigot
who has never been shown elementary calculus, derivatives.
The Jew that said 'we establish by definition that pi is exactly 3.0' was
stoned, either by having rocks thrown at him or too much wacky baccy,
or both.
2Chronicles 4:2 reads thus, “Also he made a molten sea of ten cubits from
brim to brim, round in compass, and five cubits the height thereof; and a
line of thirty cubits did compass it round about.”
He's in love with you, of course. Sometimes
it takes another to see it, but ces't la vie.
Many a romance has begun over the internet.
I prefer women myself, as I'm sure you do,
given your reports of "Pretty Lady" a while back,
but Wabnigga? Well, we know how strange he is.
If you do meet, put a padlock on your arse.
Impress that this is **the ASSUMPTION that Einstein made**
which ultimately results in the phenomenon of 0/0, which gives
theoretical results that **always** do fit the bill of any "experiment"
for any its "observer(s)", even if they have to drag their own
"frame" along to fit the "observations"... ahahahaha...
>
I doubt though, that Wabbie will get it. He is, like all Einstein
Dingleberries, damaged goods who were robbed of their
individual thinking by the religious force of indoctrination, just
like Jews, the Evangelicals and the ass-venting Muslim are.
No difference!, since physics too, in they final analysis, happens
to be an anthropo-social enterprise.... ahahaha... ahahanson
2 things in one statement, both 1/2 wrong.
1.
AB is any arbitrary distance. That is the definition. Period.
Limit case ould be 0, of course, to be mathem. consistent,
but not valid for an experiment to perform.
2.
Stop time is short against AB time (or BA) and is negligible
in the context of the original problem.
It is not zero, of course, and may be of interest otherwise.
>>
>[hanson]
>.... ahahahaha... I don't think you'll get thru' to Wabie, with
>any illustration about the speed of (A to B) and (B to A)
>being not the same in nature, no matter how many terrestrial
>left/right or to/fro locations A and B, straight or wiggly in
>between, photographic or drawn, you show him.
Two way speed vs. one way speed.
#############################################
hanson and Androcles are NOT rpt NOT able to give
a reference to a ONE_WAY c speed measurement.
#############################################
Just in case, if otherwise, precise results are available,
Here's the space for your link to one-way c:
(e.g. Roemer)
.
.
.
.
.
>Wabbie will
>not get it, just as he did not get it when I suggested for him
>to do the retro-engineering with [(t' = t*sqrt(1-v^2/c^2) etc].
>>
Andro's math exercises are childish, and he does not know
how to calculate a LIMES. I have already shown his error,
in that 0/0 calculation which actually yields 1/1 when done
matematically correct.
>But, **maybe** it will sink in, if you tell Wabbie that the train,
>when going from the Innsbruck valley (A) UP the slope to the
>Brenner Pass (B) will NOT have the same speed as when it
>is rolling DOWNHILL from the pass (B) BACK down into the
>Innsbruck valley (A) from where it started.
>>
>Stress to Wabbie that Einstein, ad hoc, willfully & emotionally
>decided and insisted to DEFINE in his, Einstein's mind, that
>the train will always have the same speed (his case the light)
>no matter whether it goes up/down -- to/fro -- left or right.
>
>Impress that this is **the ASSUMPTION that Einstein made**
>which ultimately results in the phenomenon of 0/0, which gives
Youy are absolutely wrong, and you know it,
and you are a notorious liar therefore, hanson.
Your mishap is, that you rely 110% on Androcles' faulty math.
>theoretical results that **always** do fit the bill of any "experiment"
>for any its "observer(s)", even if they have to drag their own
>"frame" along to fit the "observations"... ahahahaha...
Practical results are, (within error bars)
that everybody measures the same value of c,
regardless of the applied method.
Here is some space for your counter-examples,
in case you know some:
.
.
.
.
>>
>I doubt though, that Wabbie will get it. He is, like all Einstein
>Dingleberries, damaged goods who were robbed of their
>individual thinking by the religious force of indoctrination, just
>like Jews, the Evangelicals and the ass-venting Muslim are.
>No difference!, since physics too, in they final analysis, happens
>to be an anthropo-social enterprise.... ahahaha... ahahanson
Do your homework, hanson, and crawl out from Andro's sphincter.
w.
> Do your homework, hanson, and crawl out from Andro's sphincter.
They are both just heckler's and spoilers. Nothing more. I can't understand
any reason at all to respond to either of them. Puzzles me that anyone does.
Bob
--
"Things should be described as simply as possible, but no simpler."
A. Einstein
1. Events occur.
2. Humans, who are equipped with sensors, memory,
and a correlator (Hippocampus) sense, react, store, correlate
and re-react to these events.
3. Stored events are ordered on the exponential changes
that occur in the environment and the sensing process,
and ultimately are ordered on a long baseline called entropy.
4. Humans sense an event,
process it first with reflex circuitry,
then with hardwired "fight or flight" circuitry laid down by evolution,
and then with data stored in memory.
5. When reflex and "fight or flight" circuitry is not active,
such as when sleeping or at rest, the hippocampus
correlates memory data with memory data,
and the heartbeat serves as the time base for the
correlations involved.
6. High correlations stimulate glandular secretions
creating feelings of fear, pleasure and insight in the human
when correlations occur. The degree of emotion is a function
of the degree of correlation involved.
7. The correlator that man evolved is a survival mechanism,
and first served to regulate man's daily activity,
"sleep when dark" and "forage when light"
for the best chances of surviving.
Then it served to regulate man' monthly activity
"forage longer and attack enemies when the moon is full"
for the best chances of surviving.
Then it served to regulate man' yearly activity
"migrate to avoid temperature extreme, and to
find food, and avoid predators",
for the best chances of surviving.
8. So man's natural time base, the heartbeat
became slowly correlated with days, months and years,
and these correlations with the heartbeat became known as "times".
9. Man observed that events also occurred between
these "times" and as he had no way to quantize the times directly,
he divided his day, month and year times into analog times
using such cues as the angle of the Sun and the length of shadows.
10. Eventually Galileo observed that the swing of a pendulum
correlated with his heartbeat, and this lead to finer and finer,
and more accurate measures of times.
11. As man developed finer and more precise measures of times
he began to correlate sets of events with other sets of events,
using an external "clock", rather than his heart, or the day or the month
or the year as his time base for purposes of performing the correlations.
12. At this point, Maxwell appeared on the scene, and
observed that all of the physical properties could be defined in
terms of just three physical properties and he selected time, mass,
and a three-dimensional vector called "del factor" as his
"fundamental Properties".
Maxwell's system is now called "Dimensional Analysis",
and it is the standard that ALL physics models
MUST conform to.
13. ALL physical measurements start from some
master oscillator that provides the UNITS of time.
In other words, now heartbeats,
the beats of the day, month, year, and all other
beats (Oscillations) are referenced not to individual heartbeats,
but to some master oscillator. The unit of time is no longer
a heartbeat, a day or a year, but one cycle of some
master oscillator.
In order to accommodate man's natural oscillator, his heartbeat,
an artificial time unit called the second was established,
and was referenced to the day, the month and the year,
and at this time to the natural oscillation period of
various so-called "atomic clocks",
which are NOT clocks but stable atomic process
that electronic oscillators are synced to.
14. A clock is a time unit ACCUMULATOR,
and it accumulates time units from some auspicious event,
(Time zero, the opening of an electronic gate,
the birth of the universe or the birth of some famous person.)
So the answer to your question is:
Clocks count UNITS OF TIME,
and units of time are the ticks associated with
what one uses as their standard time unit.
Note that sometimes continuous processes
(Water clocks, hour glasses, sun dials, etc.)
are used to substitute for the fundamental discrete processes
that are the real stuff of time as used in Maxwell's Dimensional Analysis.
This is because the concept of time came about to quantize the
exponential changes taking place in man's environment,
some of these exponential changes like
the exponential decay of a pendulum
can be used as an analog for the more fundamental
concept of time used by Maxwell.
--
Tom Potter
*** Time Magazine Person of the Year 2006 ***
*** May 2007 Anti-Bigot Award ***
http://home.earthlink.net/~tdp
http://tdp1001.googlepages.com/home
http://no-turtles.com
http://www.frappr.com/tompotter
http://spaces.msn.com/tdp1001
http://www.flickr.com/photos/tom-potter
http://tom-potter.blogspot.com
--
Posted via a free Usenet account from http://www.teranews.com
There's so little signal here, that every once in awhile I take
a poke at the noise generators out of sheer boredom.
- Randy
Watch the movie reviewed here.
http://www.imdb.com/title/tt0089343/
Take to heart the advice the professor gives.
Don't look for a happy ending.
Socks
That would spoil the fun, surely... but ok.
The hill is 0.9 miles long, in between Fucking, Ostermiething,
elevation 1562 ft, and Fucking, Tarsdorf, elevation 1541 ft,
with a summit of elevation 1652 feet, which is a climb of
about 100 feet, according to Google Earth (which is not always accurate).
Why Fucking, Tarsdorf isn't called Fucking, Osteryourthing is
a mystery.
http://www.wadias.in/site/arzan/blog/fucking_austria.jpg
http://boingboing.net/images/141201342_4993a24c2b.jpg
The A-train chugs up the hill from Fucking until it is halfway to Fucking,
travelling at 30 mph.
Ask Wabbie this.
How fast must it descend from the summit to Fucking
to obtain an average speed of 60 mph?
: >>>
: Stress to Wabbie that Einstein, ad hoc, willfully & emotionally
:
:
:
:
Or are you transforming into a teacher, a dude who thinks
that he does know and then crams down your throat what
you do NOT want to know, and much less to hear?...
That T-MO breeds virulent Einstein Dingleberries, Tom.
I am sure that il professore will not invite you to La Grotta
Azzura on Capri, BUT, W^3 aka Wooley Wooffer Wabnig
may wanna meet and meat you... ahahaha... together with
the other 2 Einstein Dingleberries, Sponge Bob and Blind
Poe, the latest issue & incarnation of the 3 stooges... and
you 4 guys could unfurl into a 4-vector manifold, relativistically
speaking. -- See, there are solutions for you, albeit not with
Mardini... ahaha... Thanks for tyhe laughs, Tom... ahahaha...
>
"Tom Potter" <tdp...@yahoo.com> wrote in message
news:46cadca3$0$21137$8826...@free.teranews.com...
>
> "fmardini" <f.ma...@gmail.com> wrote in message
> news:1187554983....@d55g2000hsg.googlegroups.com...
>>> "Start at the very beginning, a very good place to start." Julie
>>> Andrews,
>>> I
>> indeed it is :)
>>> think
>>> it was, that sang that.
>>> Anyway, here's what you are looking for.
>>> http://www.androcles01.pwp.blueyonder.co.uk/Smart/Smart.htm
>>
[Mardini]
Tsk tsk....
Cockney rhyming slang, pal.
A road is a frog.
Your face is a boat.
Your feet are plates.
Your eyes are minces.
A walk is a ball.
A woman has bristols.
How does this work, you ask...
It's word association with a rhyming word.
Road rhymes with toad, so frog and toad, road.
Face rhymes with race, so boat race, face.
The annual boat race is held in the Spring between Oxford
and Cambridge, the two most prestigious universities in
the world.
http://www.theboatrace.org/
Plates of meat, feet.
Mince pies, eyes.
Ball of chalk, walk.
Bristol City, tittie. "She's got a nice pair of bristols"
Telling porkies ... pork pies, lies.
http://www.phespirit.info/cockney/slang_to_english.htm
The code was introduced in London by the less savoury gentility
who did not want their conversation eavesdropped upon by the
Old Bill ("Won't you come home, Bill Bailey", and the central law
court in London is the Old Bailey, or old prison)
who at that time were not in uniform. So if I say I'm going for ball
up the frog, it means a walk up the road.
Woolly woofter, poofter.
: may wanna meet and meat you... ahahaha... together with
: the other 2 Einstein Dingleberries, Sponge Bob and Blind
: Poe,
Now Poe can't read, you see, and it struck me that he was
almost like Blind Pugh of Stevenson's Treasure Island, totally
useless and giving around giving people the black spot.
As with Phuckwit Duck, he's an adept at saying what things
are not. Phuckwit Duck has the same initials as Paul Draper,
and is so named for this hilarity:
[Draper]
I have to admit that I am demoralized at the moment.
I had hoped that we could fight ignorance with a proactive rather
than a reactive approach, but this is clearly the improper forum for
that. A quick survey of the length of threads initiated by or
drifting
to nonsense compared to the length of threads based on sound thinking
reveals the true interest in the proposal.
While it would be a useful project to contribute to the FAQ, the
intent was to educate in the context of discussion, a virtual
"classroom" if you will. There's no point in contributing to a
reference that none of the "students" will read or attempt to learn
from. The intention was to focus on *exactly* what is wrong in
someone's thinking (which varies from person to person), set it
straight, and then make progress from there.
I had high hopes -- really -- that perhaps one misguided soul would
read something sensible and say, "Oh... Really?...Oh. I see I was
confused. OK, I get it now. Now what about...?" My head knew better,
my heart does not.
[sitting in the duck blind, waiting with a shotgun for a duck to
appear]
PD
I've blasted his tail feathers a number of times, but it is fun to remind
him of his sentimental stupidity.
: >
:
:
Mardini's question was:
"Do clocks measure time,
or is time that what clocks measure??!"
As I pointed out,
clocks measure the number of units of
the particular cyclical process used as one's standard,
and that as clocks are used to track the exponential changes
occurring in an environment,
that any reliable exponential process can after being referenced
to one's master oscillator, be used as a sort of analog clock.
In other words, AFTER some change in an environment
is mapped to one's master oscillator,
it can be used as a secondary clock,
as long as the process is dependable.
(Hour glass, water clock, light speed in sparse media, etc.)
But to answer Mardini's question:
Time is the number of counts of one's master oscillator,
between one auspicious event
and another auspicious event.
Note that as " light speed in sparse media" is fairly dependable,
I did give Mardini his "space time continuum",
as Maxwell's three-dimensional space vector (Del factor)
can be mapped to one's master oscillator.