Elementary astronomy; a beginner's text-book (1899)
Holden, Edward Singleton, 1846-1914 · New York, H. Holt and company · leaf 276
re associated in this discovery. The Progressive Motion of Light.—Galileo made ex-periments to determine whether light required time to passfrom one place to another. His methods were not suffi-ciently refined to decide the question, but the subject wasnot lost sight of. In the year 1675, Olaus… … Fig. 159.—The Eclipses of Jupiters Satellites and the Progressive Motion of Light. S, is the Sun : T, is the Earth in its orbit; J, is Jupiter in opposition with the Sun ; J is Jupiter in conjunction with the Sun. The figure shows the Earth at T. When Jupiter is at Jit is nearest to the Earth; when…
Astronomy
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