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Arsonval, Arsène d'

(Encyclopedia)Arsonval, Arsène d' ärsĕnˈ därsôNvälˈ [key], 1851–1940, French physicist and physician. He worked under Claude Bernard and under C. E. Brown-Séquard (whom he succeeded in 1897 at the Collè...

ammeter

(Encyclopedia)ammeter ămˈmēˌtər [key], instrument used to measure the magnitude of an electric current of several amperes or more. An ammeter is usually combined with a voltmeter and an ohmmeter in a multipurp...

galvanometer

(Encyclopedia)CE5 Galvanometer galvanometer gălˌvənŏmˈətər [key], instrument used to determine the presence, direction, and strength of an electric current in a conductor. All galvanometers are based upo...

voltmeter

(Encyclopedia)voltmeter, instrument used to measure differences of electric potential, commonly called voltage, in volts or units that are multiples or fractions of volts. A voltmeter is usually combined with an am...

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