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ampere
(Encyclopedia)ampere ămˈpēr [key], abbr. amp or A, basic unit of electric current. It is the fundamental electrical unit used with the mks system of units of the metric system. The ampere is officially defined a...Ampère, André Marie
(Encyclopedia)Ampère, André Marie ămˈpēr; Fr. äNdrāˈ märēˈ äNpĕrˈ [key], 1775–1836, French physicist, mathematician, and natural philosopher. He was professor of mathematics at the École Polytechni...coulomb
(Encyclopedia)coulomb ko͞oˈlŏm [key] [for C. A. de Coulomb], abbr. coul or C, unit of electric charge. The absolute coulomb, the current U.S. legal standard, is the amount of charge transferred in 1 second by a ...ohm
(Encyclopedia)ohm ōm [key] [for G. S. Ohm], symbol Ω, unit of electrical resistance, defined as the resistance in a circuit in which a potential difference of one volt creates a current of one ampere; hence, 1 oh...electric and magnetic units
(Encyclopedia)electric and magnetic units, units used to express the magnitudes of various quantities in electricity and magnetism. Three systems of such units, all based on the metric system, are commonly used. On...International System of Units
(Encyclopedia)International System of Units, officially called the Système International d'Unités, or SI, system of units adopted by the 11th General Conference on Weights and Measures (1960). It is based on the ...transformer
(Encyclopedia)transformer, electrical device used to transfer an alternating current or voltage from one electric circuit to another by means of electromagnetic induction. The simplest type of transformer consists ...watt
(Encyclopedia)watt [for James Watt], abbr. W, unit of power, or work done per unit time, equal to 1 joule per second. It is used as a measure of electrical and mechanical power. One watt is the amount of power that...volt
(Encyclopedia)volt [for Alessandro Volta], abbr. V, unit of electric potential and electromotive force. It is defined as the difference of electric potential existing across the ends of a conductor carrying a const...Ozanam, Antoine Frédéric
(Encyclopedia)Ozanam, Antoine Frédéric äNtwänˈ frādārēkˈ ōzänämˈ [key], 1813–53, French Roman Catholic scholar. In 1831 he first achieved notice with his pamphlet against the Saint-Simonians. In Pari...Browse by Subject
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