A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 305
r plug ofsome insulating material. To charge the jar, the outside coating is con-nected with the earth, asby holding it in the hand,and the outside coatingis connected with theconductor of a machine.(See Condenser. Accu-mulator. ) The inner coating ofthe jar is usually con-nected with the knob by £… … Jar.] 296 [Jet. the jar. Such a form, however, is extremely ob-jectionable, since, although the top of the jar becovered with shellac varnish to avoid leakage, itaffords but a poor insulation in damp weather, be-cause both the metallic rod supporting the ball and
Electricity · Electrical engineering
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