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The fact that the Harvard classification of a star indicated its surface or photospheric temperature (or more precisely, its effective temperature ) was not fully understood until after its development, though by the time the first Hertzsprung–Russell diagram was formulated (by 1914), this was generally suspected to be true. [12] In the 1920s, the Bengali physicist Meghnad Saha derived a theory of ionization by extending well-known ideas in physical chemistry pertaining to the dissociation of molecules to the ionization of atoms. First he applied it to the solar chromosphere, then to stellar spectra. [13]

All US, Canadian, and International Rollergirls ... Skater Name: Skater Number: Date Added: League!(ED: REF: 2012-02-20: Santiago Roller Derby

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