Recreations in astronomy : with directions for practical experiments and telescopic work (1879)
Warren, Henry White, 1831-1912 · New York : Harper & Brothers · leaf 69
we detectit? If a star approach us, it puts a greater number ofwaves into an inch, and shortens their length. If it re-cedes, it increases the length of the wave—puts a lessnumber into an inch. If a body giving only the num-ber of vibrations we call green were to approach suf-ficiently fast, it… … 1. Solar Spectrum 2. Spectrum of Potassium 3 Speetrj 4 .Spectr- Sarper i. F G H Hi \* 1 Zj cillilllllllllllllilll^CIillM fi llillrllmllillml 150 llillllill 1601 III illlll , 17C ilim! 1; T& 9 3 100 ( 110 120 130 140 m 150 liiiihiii 160lllllll II 1 170II (III . | o 1 L ; . ■■ ■• 1 ft 1- 90 100…
Astronomy
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