Re: A little challenge for relativists.


"shuba" <tim.shuba@xxxxxxxxxxxxx> wrote in message
news:tim.shuba-0E8A1F.06162301112005@xxxxxxxxxxxxxxxxxxxxx
> O'Harry wrote:
>
> > I don't think that the PoR in
> > itself can lead to an invariant speed (it didn't in the time of Newton),
for
> > that at least one additional assumption is needed.
>
> In the case of Galilean Relativity, the invariant speed c is infinite,
> so the relativity principle did in fact lead to an
> invariant speed in Newton's day, though it's easy to see why the
> significance of this *mathematical fact* was not appreciated at
> the time. Dirk Vdm gave a nice link to a proof of this several
> days ago. Section 10.8 of
> http://www.courses.fas.harvard.edu/~phys16/Textbook/ch10.pdf

Fine - I don't consider the absence of a limiting speed as a valid
"invariant" number, but you may do so if you like. Now do you disagree with
Bill and Tom or don't you?

Harald


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