Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 78
r and in the base is journaleda wire having a hook at the upper end. This vertical wirecarries a curved arm, to which is attached a thread havingat its extremity asmall weight, suchas a button. Thepropelling power inthis model consistsof an elastic rubberband placed on thehook on the verticalrod,… … Flying Pendulum. As the arm is carried around by the power stored in therubber band, the weight on the thread is thrown outwardby centrifugal force. When it reaches one of the side rods,it wraps the thread several times around the rod, thus hold-ing the arm until the thread is unwound by the action…
Physics · Lantern projection · Electric apparatus and appliances
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