Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 523
soft 500 EXPERIMENTAL SCIENCE. iron wire of which the core of the armature is formed.The wire, before winding, should be varnished witli shellacand allowed to dry, and the surface of the spool on whichthe Avire is wound should be covered with paper to preventthe sticking of the varnish when the… … Winding: the Armature. between the flanges. It is divided at the center and fastenedtogether by screws. Each part is tapered slightly to facili-tate its removal from the wire ring. The wife is wound onthe spool to a depth of t inch. It should be wound in evenlayers, and when the winding is…
Physics · Lantern projection · Electric apparatus and appliances
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-479-300.webp)
