Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 68
of the two forces acting upon it. FALLING BODIES—INCLINED PLANE—THE PENDULUM. 45 THE PENDULUM. A simple pendulum, which is a purely theoretical thing,is definecl as a heavy particle suspended by a thread havingno weight. The nearest possible approach to a simple pen-dulum is a heavy body suspended… … Oscillating and Conical Pendulums. case the pendulum consists of a heavy bullet or lead ballsuspended by a iine silk thread. This pendulum, to beatseconds in the latitude of New York, must be 39-1012 incheslong. That is the distance between the point of suspensionand the center of oscillation of…
Physics · Lantern projection · Electric apparatus and appliances
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