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janeczek's latest activity
J
janeczek
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Matter density right after the decoupling
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Number density of air is ##2.5\cdot 10^{25}## molecules per cubic meter... It's larger by 16 orders of magnitude. Now that makes me...
Yesterday, 7:13 PM
J
janeczek
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Matter density right after the decoupling
.
Right... So the formula for the total density of hydrogen is ##(1+z)^3\cdot 1.6\,m^{-3}##. So for ##z=0## it's 1.6 hydrogen atoms per...
Yesterday, 6:27 PM
J
janeczek
replied to the thread
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Matter density right after the decoupling
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Is ##Q_H## the energy of hydrogen ionization?
Yesterday, 5:47 PM
J
janeczek
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Matter density right after the decoupling
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Cosmology
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https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the...
Yesterday, 5:16 PM
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