Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 291
the ear, so as toobtain the exact relation between them. This method, which depends on the persistence of visual sensations onthe retina, consists in fixing a small mirror on the vibrating body, so asto V brate with it, and impart to a luminous ray a vibratory motion similar toits own. Lissajous… … few yards distance from the mirror is a lamp with a dark chimney, in whichis a small hole giving a single luminous point. The tuning-fork being atrest, the eye is placed so that the luminous point is seen at o. The tuning-fork being made to vibrate, the image elongates, forming a persistent image,…
Physics
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