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volt |
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volt [for Alessandro Volta Volta, Alessandro, Conte (älĕs-sän`drō kôn`tā vôl`tä), 1745–1827, Italian physicist. ..... Click the link for more information. ], abbr. V, unit of electric potential potential, electric, work per unit of electric charge expended in moving a charged body from a reference point to any given point in an electric field (see electrostatics ). ..... Click the link for more information. and electromotive force electromotive force, abbr. emf, difference in electric potential, or voltage, between the terminals of a source of electricity, e.g., a battery from which no current is being drawn. When current is drawn, the potential difference drops below the emf value. ..... Click the link for more information. . It is defined as the difference of electric potential existing across the ends of a conductor carrying a constant current of 1 ampere when the power dissipated is 1 watt. The kilovolt (1,000 V), the millivolt (0.001 V), and the microvolt (0.000001 V) are units derived from the volt. See voltmeter 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 ammeter and an ohmmeter in a multipurpose instrument. ..... Click the link for more information. . A unit of measurement of force, or pressure, in an electrical circuit. The common voltage of an AC power line is 120 volts of alternating current (alternating directions). Common voltages within a computer are from 3 to 12 volts of direct current (one direction only). See voltage and volt-amps. |
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5 microvolts prompted 100 percent increases, she notes. The Company's products incorporate its proprietary Microvolt T-Wave Alternans measurement technologies, coupled with its patented Spectral Analytic Method and ultra-sensitive disposable electrode sensors. The installed base of Microvolt T-Wave Alternans (MTWA) systems at the end of 2006 was approximately 650. |
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microvolt
