Abstract

Two methods of measuring potentials of the order of 100,000 volts are given which make use of ordinary laboratory instruments. The two methods are compared experimentally and good agreement is obtained to within 1 per cent at least. A new type of resistance with an “effective zero temperature coefficient” is described and its use for the measurement of high potentials is discussed. The methods are of particular value when the power source is a small one.

© 1927 Optical Society of America

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