On 25 June 2014 09:22, John Ross <jr...@trexenterprises.com> wrote: > The shell is mostly an approximately equal number of very cold electrons > and positrons, all traveling randomly at 2.19 X 106 m/s. They are going > too fast to combine as positronium. > > Why is a particle moving "too fast to combine into positronium" - at about 1% of lightspeed - described as "very cold" ? Temperature is an emergent property of the average kinetic energy of particles!
And why don't these particles collide and annihilate , which would give rise to a background radiation of the specific wavelength equivalent to the masses involved (corrected for doppler shift if the shell is receeding) ? -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
