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Science-Related Homework Help Physics Topic started by: doit_the_clown on Mar 21, 2017



Title: The conditions in the early universe at the time that matter became decoupled from radiation were ...
Post by: doit_the_clown on Mar 21, 2017
The conditions in the early universe at the time that matter became decoupled from radiation were (in terms of age t, peak background wavelength , and equivalent temperature T)
A)   t = 2 × 1011 years,      = 1 mm, microwaves,      T = 3 K
B)   The universe was never radiation-dominated since matter has always dominated by generating the gravitational field into which the universe has expanded.
C)   t = 3 minutes,      = 0.3 m, near UV,     T = 107 K
D)   t = 500,000 years,      = 1 m, infrared,     T = 3000 K


Title: Re: The conditions in the early universe at the time that matter became decoupled from radiation ...
Post by: hyponotica on Mar 21, 2017
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