Re: General Theory of Relativity

[brian whatcott <inet@INTELLISYS.NET>]

At 01:57 12/13/98 -0500, you wrote:
> This is not contrary at all. Galilean transformation just gives the
> usual law for adding velocities.
>        v'=v-u where u is the velocity of the primed observer as seen by the
> unprimed observer -- just the everyday way we mentally transform to a
> moving frame. Obviously c (or any velocity) is not invariant to this
> transformation. However since u is a constant (for inertial frames),
> du/dt = 0, and a'=a. Thus acceleration of moving object is same as seen
> by both observers.
....
> This is not controversial in the slightest.
> J. Epstein
Here Jerry seems to use the term acceleration as though it means
rate of change of speed, rather than rate of change of velocity.
 I believe that descriptions of how direction apparently changes for
near luminal velocity objects figured in studies of apparently
 supra-luminal celestial objects - along with issues of gravitic
focussing of celestial images. And it is quite certain that the
 underrated Mr Tomkins saw devastating changes in oncoming near
luminal objects, did he not?

But I am straying dangerously far from any pretensions of personal
 competence, and am quite resigned to the possibility of instant
rebuttal!   :-)


brian whatcott <inet@intellisys.net>
Altus OK