The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 210
andhydrogen and other gases which are aflame, produce certain col-ors between certain dark lines of the spectrum, and as the lightfrom the Sun also produces the same identical colors betweenthe same identical lines, it is known that the Sun contains thesedifferent substances which are burning up in… … Fig. 184.—The Spectroscope. 90 millions of miles from the Sun—which takes about 8%minutes, or 45 years for the light to reach it from Aldebaran, italways acts exactly in the same way; and so we know a gooddeal about the stuff the stars are made of. Lets see now, how a real spectroscope is made, for…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
