Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 512
ndwound with No. 18 cotton or silk covered copper wire. Itis, in fact, a very short and wide bar electro-magnet, havingenlarged and elongated ends of the form of a segment of aC3dinder. In diameter the armature is only a very little lessthan that of the cylindrical space between the parts, A B,of… … Hand Power Dynamo—Vertical Section—Half Size. 490 EXPERIMENTAL SCIENCE. To opposite ends of the armature are fitted the brass heads,1 J, into which are screwed the shafts, b c. The core, G, ofthe armature is filed to remove roughnesses and hard scale,and the heads and shafts are fitted to the ends…
Physics · Lantern projection · Electric apparatus and appliances
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