Upper Air Temperatures from Spectra
SEP 01, 1950
DOI: 10.1063/1.3067018
When a diatomic gas is emitting light (as in gas discharges, the Northern Lights, and the light of the night sky), the temperature of the gas can be measured from the distribution of light intensity in that part of the spectrum which is due to changes in the rotational energy of the molecules.
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© 1950 American Institute of Physics
