On Wed, 17 Sep 2008 06:48:05 -0500, Cecil Moore
wrote:

Jeff Liebermann wrote:
So, the mass of the particle at 90% the speed-o-light is 10 times that
of the particle at rest. It doesn't matter what particle. Do I get a
gold star?

That doesn't work for photons which are particles with
zero rest mass.

Yep. Brain damage after midnight. I first read electron, due to the
preceding CRT example. I then read proton without my reading glasses.
This morning, it morphed into photon. My apologies and I promise
never to post anything after midnight, on an empty stomach, without
glasses, while still working in my palatial office, and on subjects I
know little.

However, the jury is still out if photons have mass. NASA and others
say no:
http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/960731.html
http://www.ccmr.cornell.edu/education/ask/index.html?quid=240
However, photons do have momentum or:
p = m v
which yields a calculatable value for mass at light speed for a
measurable momentum (i.e. transfer of momentum due to light pressure).
It's stuff like this that make me which quantum effects should never
have been discovered.

Fire the photon torpedoes...

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558