Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York : H. Holt and company · leaf 262
rd Bwith such a velocity that he movesfrom B to B during the time re-quired for a ray of light to move fromA to B. Suppose also that the ray of light 8 A reacheaA at the same time that th.e end of his rod does. Thenit is clear that while the rod is moving from the positionA B to the position A B,… … FiG. 73. 243 AaTRONOMT. ing the position h a, will be one third of the way from Ato B, and will therefore be accurately on the rod. Con-sequently, to the observer, the rod will appear to be point-ed at the star. In reality, however, the pointing will notbe in the true direction of the star, but…
Astronomy
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