Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 44
toearth either by a wire or simplyig. . ej en ar. |^^ holding it with the hand. As fast as electricity passes to the knob, it spreads to the inner coat ofthe jar where it attracts electricity of the opposite kind from the earthto the outer coat, repelling electricity of the same kind. If the… … ELECTRICITY AND MAGNETISM 25 may be touched with the finger and no appreciable discharge noticed.Similarly the outer coat may be touched with the finger with the sameresult. But if the inner and outer coats are connected with the dis-cbai^er, a powerful spark passes. The experiment shows that it is…
Electrical engineering
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