Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 22
6; therefore the resistance mustbe 2 multiplied by itself. 4X6 2^2 = 6 dynes. Ans Electroscope 13. An electroscope is used to discover thepresence of a charge ; an electrometer meas-ures the quantity of electricity in a charge.An electroscope is necessarily a very sensitiveinstrument. The one shown… … 22 MODERN ELECTRICITY m hanging straight down. As soon as any body, as a stick ofsealing-wax, charged in the slightest way, is brought nearthe upper end of the brass rod, the two strips of gold leafwill fly apart, and if the charge is strong they will tear.This is caused by induction: the upper end…
Electrical engineering
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