Re: A little challenge for relativists.


"shuba" <tim.shuba@xxxxxxxxxxxxx> wrote in message
news:tim.shuba-8AB091.08285902112005@xxxxxxxxxxxxxxxxxxxxx
> O'Harry wrote:
>
> > Fine - I don't consider the absence of a limiting speed as a valid
> > "invariant" number, but you may do so if you like.
>
> The point is that an instantaneous signal in Galilean relativity
> would be instantaneous in all frames, independent of the speed of
> the source. You would be better off studying the mathematics of
> relativty, rather than making more uninformed and disingenuous
> comments based on your poor understanding.

You would be better of studying physics: light is not instantaneous in
*Newtonian* mechanics.

> > Now do you disagree with
> > Bill and Tom or don't you?
>
> What would lead you to think that I disagee with them? I doubt
> they would disagree with my initial statement either, as it's a
> well known and uncontroversial fact about the group structures
> that can logically follow from the relativity principle.

Your "The Principle of Relativity leads to an invariant speed c", sounds
quite different from "It also came from Maxwell's equations" and "his
(implicit) assumption that Maxwell's equations are a law of physics accounts
for it completely".

Bye.
Harald


.

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