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 46
Tc:> Fig. 33. Toepler-Holtz Static Machine. that the latter is charged negatively. The reason for this is that evenwhen A rests upon B it is in reality separated from it, at all but a very 36 ELECTRICITY AND MAGNETISM 27 few points, by an insulating layer of air; and, since5is a…
Electrical engineering
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