On 10/23/2016 12:48 AM, Archimedes Plutonium wrote:
> On Saturday, October 22, 2016 at 11:53:25 PM UTC-5, Michael Moroney
> wrote:
>> Archimedes Plutonium <
plutonium....@gmail.com> writes:
>>
>>> Now, take a few minutes and look at Ohm's law
>>
>>> V = current times resistance
>>
>>> Now, realize that current is A*seconds, charge times seconds
>>
>> No, A (amperes) is current. A*seconds is charge. Current is
>> equivalent to charge/second.
>>
>
> Good that one of the two physics failures gets involved, because when
> one gets involved, I can explain the physics better.
>
> It so happens that Halliday & Resnick, my source for units, in their
> PHYSICS, Extended Version (yellow cover with green waves) 1986, page
> A21 uses the Electric Current symbol A, amperes.
>
> H&R do not use "i" but use A
they are both use for current, I, i typically, and A is the amount or
magnitude, or mA, or ma, or......
>
> And further down H&R calls V for voltage as that of kg*m^2/A*s^3
>
> Quantity of Electricity, charge, Coulomb = C = A*s
which is not current......
>
>> Ohm's Law is Voltage is current times resistance, V=I*R (I is
>> standard notation for current in amperes A)
>>
>> How the hell can you claim to be "fixing" Maxwell's equations if
>> you don't even know what current or charge are?
>>
>
> So that a physics failure has a mind of concrete and when he sees A,
> the failure could never envision it being current as ampere. A
> failure of physics thinks current can only be "i" because that is
> what he learned in a textbook with his concrete mind.
nope, it depends upon context. in circuit design problems, I is
current, A is amps. if you use SPICE or other simulators, i means
current, usally with a subcase number per element. current i1 in
resistor 1....
But i also is (-1)^0.5, and currents can be complex numbers, 1+i1, and
the elements can have have complex impeadance. So j is also used as
(-1)^0.5
>
>>> In Electricity/Magnetism we can easily and justifiably
>>> intermingle time with distance, almost in every situation.
>>
>>> So now, V= A*s*(resistance)
>>
>>> then, V/s = A*R
>>
>>> now, intermingling seconds with meters we finally have
>>
>>> V/m = A*R
>>
>> All based on a false assumption so all that is wrong.
>>
>
> All of mine above is correct if you realize that current is measured
> in Ampere which is A = dq/dt across a x*x cross section.
dq/dt is rate of charge per unit time or coulmbs per second which is
measured in Amperes, which disagrees with your definition of current is
ampere-seconds
and it is still all wrong as you are trying to substitute meters for
seconds. In Physics the units must always check, yours do not.
>
> So the definition of current embodies several distance length in
> meters and several time parameters in seconds. Far over the head of a
> physics failure.
definition of current is
I = current = coulomb/second = ampere-second/second = ampere
and has nothing to do with distance.
>
> What I am saying is that when we look at an equation of V=
> current*resistance, that the current term has so many parameters of
> distance length already built into it. And that V*s or V/m are the
> same as V itself.
sigh, still confused,
but remember the Physics rule,
Units Must Match (UMM)
V is not V*s, V*s is not V/m, V/m is not V
the math shows you directly that s or m is needed, and you are dealing
with different units.
V*s in a 50 ohm system is Energy
V/m for Earth is about 150 Volts per meter near the surface,
(you can not measure it with your meter as the input impeadance is not
high enough, a specialized meter is needed, or you can wire up a neon
bulb, one side to earth the other side to a wire that goes about 30 feet
up, you will see it flash at night, also remember Ben Franklin had a
wire into the air with pith ball that would ring a bell in his house in
the 1700s, when the Electric field of the earth got high enough, you can
do that too)
if you continue to ignore the math, it leads into strange conjectures
>
> The proof that no electric field exists, is experiments. And the
> World has not one single lousy experiment that shows an Electric
> field independent of Voltage.
silly rabbit, E-field is measured in Voltage and direction (vector)
dependent upon location.
all "fields" have a magnitude and a direction (vector)
Is there a Current Field ? Yes.
take a copper wire with high frequency current, there is magnitude and
direction dependent upon location in the wire.
> Not one louse experiment where you can
> graph electric field on the x-axis and Voltage on the y-axis that is
> not the function Voltage = Electric Field.
I don't think you know what a "field" is.
think of a 3 dimentional array of points, where each point has a value
and a direction, a little arrow, similar to the 2 dimentional weather
map with wind shown by a magnitude 20mph and an arrow, which way it is
going.
>
> And the reason no-one saw this before is that they were too screwed
> up in mind with V/m and V alone, not realizing that there are so many
> distance length values that goes into forming the current, such as
> the x*x cross section that H&R talk about in their Physics textbook.
current is not defined in terms of distance.
perhaps your book means a "surface" instead of x*x cross section, or the
amount of charge per second going through a surface, that is valid and
required.
a wire has a fixed cross section, which leads to problems if you define
current on a certian size wire.
So instead they define current as going past a surface or past a
point(if one dimentional current)
and V/m is not V. units do not match.
if you measure a E-Field, you normalize it to one meter, like you
measure 2000 Volts across 10 meters, that is 200 V/m.
if you say it is 2000 volts you would be wrong.