Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 234
ight travels about 185,000miles a second. This fact has been abundantly proved since Roemers time, and \g what astronomers call the T aberration of light is one of the proofs. 410. Aberration of Light.—We may get an idea of theaberration of light by observ-ing the way in which, whencaught in a… … 409. By whom was the velocity of light determined? How was it determined ?What is the velocity of light ? What is one proof of the velocity thus established ? 410. How may we get an idea of the aberration of light ? Illustrate it with Fig.87. To see a star, what must we do with our telescopes ? On…
Astronomy
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