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 858
L. The source of electricity is a battery of two to eight jars, each havinga coated surface of 1243 square centimeti-es, and charged continuously bya Holtz machine. The spark strikes between two metals balls a and b^ 11 mm.in diameter. Their distance can be varied, and at the same time measured,by… … Fig. 800 The motion is transmitted to the toothed wheels and to the mica disc bymeans of an endless band, which can be placed on any one of three pulleysP, so theit the velocity may be varied. At the end of the axis of the pulleysis a bent wire which moves a counter V, that marks on three dials…
Physics
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