Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 212
e heated until they become gases, andhydrogen and other gases which are aflame, produce spectraconsisting of certain bright lines, and as the light from the Sunalso produces black lines in the same identical places, it is knownthat the Sun contains these different substances which are heatedup in… … 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. I^efs see now, how a real spectroscope is made, for it…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
