BornFrankurt am main, (Germany), 12 September 1852
DiedBerkshire, England, 14 October 1934
German-English theoretical astronomer Arthur Schuster is commemorated in the Schuster-Schwarzschild (or reversing layer) approximation for analyzing the spectra of stars to learn their chemical composition. The idea is that you can treat the situation as if there were a hot layer, the photosphere, emitting a blackbody continuum, and a cooler layer above which imposes the absorption lines. The opposite approximation, that the continuum source and absorbing atoms are uniformly mixed, is called the Milne-Eddington approximation, and real stars come somewhere in between. Karl Schwarzschild, Edward Milne, and Arthur Eddington appear elsewhere in this book.
Schuster was the son of a Frankfurt textile merchant and banker. In the wake of the 1866 “seven weeks war” when Frankfurt was annexed by Prussia, the family moved to Manchester, England. Schuster was educated privately and at the Frankfurt...
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