... So at T 10 at T=10 10.5 (t 0.2s) 10.5 (t = 0.2s) (t 0.9s) So at T~10 10.14 End up with mainly protons, neutrons and electrons (some neutrinos) when Universe is 1 second old With ratio of N/P set as Neutrons decay with half-life of 887 seconds Formation/Destruction of Deuterium Neutrons converted to D at roughly 200s From Saha equation (but Neutron Except those neutrons that decay .. ... A bit less 28%*exp(-100s/900s) =24% when one takes into account neutron decay.. ...

... Printed in U.S.A. THE STELLAR DISK THICKNESS OF LOW SURFACE BRIGHTNESS GALAXIES D. Bizyaev 1,2,3 and S. Kajsin 4 Received 2003 October 23; accepted 2004 June 9 ABSTRACT We present surface photometry results for a sample of 11 edge-on galaxies observed with the 6 m telescope at the Special Astrophysical Observatory, Russia. ... We find from a comparison of photometric scales that the stellar disks of LSB galaxies are thinner than those of high surface brightness ( HSB) galaxies. ... UGC 11301 .. ...