Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 194
FIG. 127. — Electric bell, push button,and battery. MAGNETISM AND THE ELECTROMAGNET 179 … FIG. 128.—Thepush button. draws over the soft iron bar. This movement of the bar does twothings : it makes H strike the bell and it breaks the currentat C. When the current ceases, E is no longer amagnet and the spring draws the soft iron barback. This backward movement of the bar makes the current…
Physics · Home Economics
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