Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 652
The Magnetic Field. cylindrical piece of iron, representing the armature coreof a dynamo, is inserted between the poles of the magnetin the place usually occupied by the armature, the lines aredeflected inward, becoming perpendicular to the peripheryof the armature. The iron representing the… … Effect of an Armature on the Magnetic Field. cemented to a second plate of glass. The iron particlesarrange themselves in a more pronounced figure if theglass plate upon which they are sprinkled be jarred sHghtly.In Fig. 607 is shown a method of forming magnetic curvesfor projection in which the…
Physics · Lantern projection · Electric apparatus and appliances
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