In reply to Frank's message of Fri, 7 Jan 2011 08:06:32 -0500: Hi, [snip] >What happens to Gamma radiation emitted from matter at relativistic speeds >from our perspective? Is there a down translation to the EM frequency? Would >it matter if the velocity was spatial or equivalent? > >Fran It doesn't really matter, because gamma rays are emitted by nuclei, and these don't travel at relativistic speeds, at energies of a few MeV.
(A 10 MeV proton would be traveling at about 15% of the speed of light, heavier nuclei would be slower). Furthermore, it depends on the direction of travel of the nucleus relative to the observer. If toward the observer, then the frequency would be up shifted iso down shifted. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/Project.html
