Electrical Measurements, Vol. 2: Advanced; Instruction Paper (Classic Reprint) - Hardcover

Patterson, George W.

 
9780365456575: Electrical Measurements, Vol. 2: Advanced; Instruction Paper (Classic Reprint)

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Excerpt from Electrical Measurements, Vol. 2: Advanced; Instruction Paper

Ballistic Galvanometer. In the measurement of the capacity of a condenser by the methods given in the subsequent pages, the charge of electricity from the condenser is allowed to flow as a mo mentary current through a galvanometer, giving the suspension a sudden kick. In order to calculate from this deflection the quantity of electricity in the condenser, it is necessary to assume that the galvanometer suspension is so heavy that it will not have moved very far before the charge has completely passed. This requisite, viz, a heavy suspension, is the distinguishing feature of the ballistic type of galvanometer. (see Fig. 7, Part I.)

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