To conserve momentum and spin they go off in opposite directions and polarized in opposite directions so that the net spin is 0 as well as the linear momentum of the two photons..
Bob ----- Original Message ----- From: Eric Walker To: vortex-l@eskimo.com Sent: Sunday, March 23, 2014 3:29 PM Subject: Re: [Vo]:My current views on the 'Rossi's process' On Sun, Mar 23, 2014 at 2:31 PM, Bob Cook <frobertc...@hotmail.com> wrote: Until they get to real low energies they mostly move in a straight line. Thus even shielding will not destroy the coincident events that detectors will record. Interesting; I didn't realize that. Somewhere I got the impression that the remission of a photon after a scattering with an electron would be in a random direction. Eric