Re: Poincaré's 1900 paper on Lorentz

On Fri, 15 Feb 2008 15:36:49 +0000, Androcles wrote:

"sal" <pragmatist@xxxxxxxxxx> wrote in message
news:47b594ea$0$29797$ec3e2dad@xxxxxxxxxxxxxxxxxxxxxxxxx | On Fri, 15
Feb 2008 14:05:19 +0100, "Juan R." González-Álvarez wrote: |
| > sal wrote on Fri, 15 Feb 2008 04:15:14 +0000: | >
| >> On Fri, 15 Feb 2008 03:53:40 +0000, Androcles wrote: | >>
| >>
| >> This paper is occasionally cited as containing most of the
| >> content of Einstein's 1905 electrodynamics paper, which, it is
| >> sometimes claimed, he plagiarized from Poincaré.
| >
| > One of reasons which Einstein has been acused of plagiarism
| > because Einstein said not the truth when affirmed several times
| > "I did not know Poincare work before 1905". We know from
| > several sources (including Einstein colleagues at Bern) that
| > Einstein read Poincaré works *before* 1905.
| >
| > I do not know from where you get the idea that Poincaré 1900
| > contains "most of the content of Einstein's 1905".

| I should have said "much" rather than "most".
| In any case, I'm not saying it did or it didn't, I was just trying
| to say that some people say it does.
|
| I have read an assertion, on a page devoted to trashing Einstein, that
| much of his 1905 work, including the clock synchronization method
| he used and the mass/energy equivalence, were lifted directly from
| Poincare:1900.

| The general approach to trashing Einstein generally seems to be
| something like this:
|
| a) Albert Einstein didn't do the work, his first wife did it all.
| b) But his wife didn't do it either, she stole it from Poincare
| c) And it's all false anyway

Show me the experiment that established the third postulate. If you
don't know what the third postulate is, I'll tell you. It is: 'the
"time" required by light to travel from A to B equals the "time" it
requires to travel from B to A' -- That's
Einstein's assertion.

Haven't we been through this before? You're asking whether
it can be shown experimentally that OWLS=TWLS.

It's a "postulate", which means it doesn't follow from anything else,
of course. The "postulates" (or "axioms") are used in describing a
model. One then studies the model, and its contact points with
reality, and attempts to make predictions which may be tested to
determine if the model disagrees with reality.

As far as I know there is no experiment which can tell you whether
OWLS=TWLS, in part because it's used in the definition of synchronized
clocks; as a definition, it really can't be tested. To test it you
need to define clock synchronization some other way first, and then
see if the OWLS=TWLS postulate is still true.


Yes, it is false anyway.

Please explain. "it is false" means some experiment shows it to be
false. What experiment do you know of which shows TWLS=/=OWLS?



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