Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 481
^ be adapted to a lightor a heavy current by combining the several coils in seriesor in parallel. It is made separable, to permit of using thecoils detached from the core. For the construction of the magnet i8 pounds of No. 14double-covered magnet wire are required, also two wellannealed… … A^a/lm./^./: Magnet for Experimentation. 7 inches long for the armature, two double wooden spools4 in. in diameter and 7f inches long, with flanges lyV ^^•wide and yg- in. thick. The walls of the spools are yV in. thick. Each space ineach spool is filled with the No. 14 magnet wire. Thereare two…
Physics · Lantern projection · Electric apparatus and appliances
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