An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 202
mple of this type of volt-meter which is commonly used to measure differences of poten-tial of 1000 volts or more. The vane A A is a paddle-shapedplate of aluminum supported by knife edges at its center.The quadrants II are both behind and in front of it and soplaced that, when a difference of… … Fig. 108. — Construction ofelectrostatic voltmeter. 174 ELECTRICITY AND MAGNETISM of the line and the stationary quadrants to the other side.The position of the pointer is controlled by gravity, littleweights being hung on a projection of the axis of the movablevane. It does not matter whether the…
Electricity · Magnetism
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