American Heritage® Dictionary of the English Language, Fourth Edition
- n. An instrument used to detect, measure, and determine the direction of small electric currents by means of mechanical effects produced by a current-carrying coil in a magnetic field.
Century Dictionary and Cyclopedia
- n. An instrument for detecting the existence and determining the strength and direction of an electric current. In all galvanometers the principle of action is the same. It depends upon the force which Oersted discovered to be exerted between a magnetic needle and a wire carrying a current—a force which tends to set the needle at right angles to the direction of the current, and whose intensity, other things remaining the same, depends directly upon the strength of the current.
- n. physics A device used to indicate the presence and direction of a small electric current, especially used to detect a null or balanced condition in a bridge circuit.
GNU Webster's 1913
- n. (Elec.) An instrument or apparatus for measuring the intensity of an electric current, usually by the deflection of a magnetic needle.
- n. meter for detecting or comparing or measuring small electric currents
“In electrocardiography the string galvanometer is the most reliable tool.”
“Nowadays, since a string galvanometer is available in almost any large hospital, this detail is only of historical importance.”
“If a wire or a nail or a smaller thing is driven through it, and the insulation is spoiled, an instrument called the galvanometer instantly records the fact, and warning is given at all parts of the ship.”
“The one nearest the Valley Road is called the galvanometer-room, and was originally intended by Edison to be used for the most delicate and minute electrical measurements.”
“To accomplish this, we employ an instrument called a galvanometer, or amperemeter, illustrated in Fig. 6, which indicates the exact amount of current being applied.”
“(fig. 4, _a_), the needle of the galvanometer, which is deflected by the electromagnetic pull of the current, generated under the action of stimulus, just as the mechanical lever was deflected by the mechanical pull of the muscle contracting under stimulus.”
“Lens 6.3 – 63 mm (38 – 380 mm on a 35 mm camera), 10x optical zoom lens, Open f/1.8 (W) – 2.5 (T), galvanometer method structure, AF: 8 groups, 11 lenses (3 aspherical elements, 5 aspherical surfaces), built-in ND filter”
“Acting a scene, Murray's face registers a sequence of emotions as precisely as a galvanometer.”
“A reflecting galvanometer covered in Bakelite that's as heavy as a lead brick.”
“The position of a needle in a galvanometer carries information about the flow of electric current.”
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