Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 16, Problem 12P
(a)
To determine
The magnitude of the temperature of the universe when protons condensed out.
(b)
To determine
The magnitude of the temperature of the universe when electrons condensed out
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What was the approximate number density of CMB photons when the CMB had a higher temperature of 507 K? (Hint: You can assume that photons in a thermal distribution have a mean energy of 3kT).
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