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Hydrogen line
Index
Physics
Concepts in physics
Concepts in astronomy
Spectroscopy
Emission spectroscopy
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1970-01-01
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Emission spectroscopy
Spectroscopy
Concepts in astronomy
Concepts in physics
Physics
Index
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Hydrogen line
by
Ciro Santilli
32
Updated
2024-09-07
Created
1970-01-01
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21 cm is very long and very low energy, because he energy split is very small!
Compare it e.g. with the
hydrogen 1-2 spectral line
which is 121.6 nm!
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