Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 506
he reflectedrays fall upon a powerful eyepiece, P. The apparatus being arranged, if the mirror in is at rest, the pencil aftermeeting M is reflected to in, and from thence returns along its former path,till it meets the glass plate V in a, and being partially reflected, forms at d—the distance ad… … plane of the paper—there will be no sensible change in the position of themirror in during the brief interval elapsing while light travels from in to Mand back again, but the image will alternately disappear and reappear. Ifnow the velocity of Vl is increased to upwards of 30 turns per second,…
Physics
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