In reply to David Roberson's message of Sun, 17 Aug 2014 23:22:45 -0400 (EDT): Hi,
Actually no place in the Universe is completely free of fields. > >Of course a particle moving within a magnetic or electric field emits >radiation due to acceleration. This is the normal behavior and I was >specifically referring to the case where nothing else was around to interact >with the particle. No external fields means no radiation for a single >particle. Combinations can radiate if their spin states can be lowered in net >energy. > >Dave [snip] Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
