Re: A question on inelastic relativistic collisions

[Herb Schulz <herbs@INTERACCESS.COM>]

At 04:28 PM -0600 on 2/19/99, C wrote:
>        I think you mean that "Internal Energy of a body is <defined>
> in the rest frame..."
>        Consider a black body.  One can, and does, measure its temperature
> by determining the frequency of the peak of the black body spectrum.  One
> can make this measurement in any frame.  The rest frame temperature is then
> determined by transforming the measurement back to the rest frame.
>        Thus, the temperature of the visible horizon is 3 deg K in our
> frame >but hotter than Hades in the rest frame.
>                                                Regards,
>                                                        Jack

Agreed.  I did indeed mean DEFINED.  We can always transform to another
system.  But it also means that Temperature is invariant by its definition;
as you originally stated.

Good Luck,

Herb Schulz
(herbs@interaccess.com)