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 264
thefundamental note of 256 vibrations, or C, nine others its harmonics, while theeleventh serves as make and break to cause the tuning-forks to vibrate bymeans of electro-magnets. Each tuning-fork has a special electro-magnet,and moreover a resonator, which strengthens it. All these tuning-forks… … Fig. 242 10 ; beyond, there is the tuning-fork break, K, arranged horizontally. Oneof its prongs is provided with a platinum point which grazes the surface ofmercury contained in a small cup, the bottom of which is connected by acopper wire with an electro-magnet placed in front of the fork. The…
Physics
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