Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 214
ber of circulardiscs of non-arcing composition, separ-ated from each other by thin sheets ofmica. A discharge jumps readilythrough these thin sheets of mica,as their combined resistance ismuch less than that of a single sheetof aggregate thickness. The dischargealso divides itself into hundreds of… … 7596. AMPEREMETER.—Simple formshowing the principle of operation. The at-traction of the electric current in the sole-noid coil, draws the iron core within thecoil against the gravity of the core andframe which swings on a frictionless bear-ing.
Mechanical movements
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