On Feb 13, 5:13=A0am, Zilla
> You must distinguish between rest mass and relativistic mass.
> Photon has relativistic mass but zero rest mass although photon
> never rests. What this means is that as something chases the
> photon faster and faster, =A0the observed energy of the photon
> approaches zero as the observer approaches the speed of light.
> This is the context of what it means for the photon to be
> "massless".
Snip the quotes, ye fucken retards!
The fot=F2n has infinite rest mass, not zero. However, it no longer is
a fot=F2n and becomes a plasm=F2n. Perfect fot=F2ns are lik perfect vacua;
you could only find them at infinity, without bodies to transmit them.