coulomb

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coulomb

(ko͞o`lŏm) [for C. A. de CoulombCoulomb, Charles Augustin de
, 1736–1806, French physicist. In 1789 he retired from his posts as military engineer and as superintendent of waters and fountains and devoted himself to continuing his scientific research.
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], abbr. coul or C, unit of electric chargecharge,
property of matter that gives rise to all electrical phenomena (see electricity). The basic unit of charge, usually denoted by e, is that on the proton or the electron; that on the proton is designated as positive (+e
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. The absolute coulomb, the current U.S. legal standard, is the amount of charge transferred in 1 second by a current of 1 ampereampere
, 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 as the current in a pair of equally long, parallel, straight wires 1 meter apart that produces
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; i.e., it is 1 ampere-second.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Coulomb

 

(1) A unit of the quantity of electricity (electric charge) in the International System of Units (SI). It was named in honor of the French physicist C. Coulomb. The abbreviations are k in Russian and C in the international system. One coulomb is the charge carried through the cross section of a conductor in 1 sec by a current of 1 ampere. The relationships between the coulomb and the units of charge in the cgs system of units are as follows: 1 C = 3 X 109 units of the cgs electrostatic (cgs esu) system; 1 C = 0.1 unit of the cgs electromagnetic (cgs emu) system.

(2) The unit of flux of electric displacement (the flux of electric induction) in the SI system of units: 1 C is the electric flux through a closed surface that contains a free charge of 1 C. The relationships between the coulomb and the unit of electric flux in the cgs system of units are as follows: 1 C ≃ 4π X 3 X 109 units of the cgs esu system; 1 C = 0.4π units of the cgs emu system.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

coulomb

[′kü‚läm]
(electricity)
A unit of electric charge, defined as the amount of electric charge that crosses a surface in 1 second when a steady current of 1 absolute ampere is flowing across the surface; this is the absolute coulomb and has been the legal standard of quantity of electricity since 1950; the previous standard was the international coulomb, equal to 0.999835 absolute coulomb. Abbreviated coul. Symbolized C.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

coulomb

the derived SI unit of electric charge; the quantity of electricity transported in one second by a current of 1 ampere.

Coulomb

Charles Augustin de . 1736--1806, French physicist: made many discoveries in the field of electricity and magnetism
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

coulomb

A standard unit of electrical charge. Pronounced "kool-ahm," one coulomb (C) is equivalent to one amp of current flowing through a conductor for one second. It is also equal to 6.25 quintillion electrons (6.25 X 10 to the 18th). From French physicist Charles de Coulomb (1736-1806), who measured the behavior of electrical charges. See capacitance.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
En 1865 el quimico suizo Jean Charles Galissard de Marignac (1817-1897) consiguio la separacion del colombio de su analogo el tantalio, metal muy parecido que acompanaba e interferia con el primero, el cientifico suizo europeizo el nombre de columbio por el de niobio en honor de Niobe hija de Tantalo.
PFC Samuel Garay, also captured in Columbio, Sultan Kudarat on February 2; and
The bodies of the three unidentified armed Moro farmers killed in the firefight were immediately brought to Columbio town in Sultan Kudarat province, Dillera said.
29; and Sergeant Solaiman Calucop and Private First Class Samuel Garay - both taken as POWs in Columbio, Sultan Kudarat on February 2.
Kidapawan City - A New People's Army (NPA) leader, together with his squad of local tribesmen, surrendered to authorities Friday in Columbio, Sultan Kudarat.
The communist New Peoples' Army (NPA) operating in southern Mindanao on Wednesday released proof of life of two soldiers who were seized in Columbio, Sultan Kudarat.
General Santos City - Police are investigating the motive behind the killing of a former New People's Army (NPA) rebel whose body was found in a mountain village in Columbio, Sultan Kudarat over the weekend.
Solaiman Calucop and Private 1st Class Samuel Garay of the Philippine Army's 39th Infantry Battalion were abducted by the rebels in Columbio, Sultan Kudarat, last Thursday.
A few minutes after, another movement was recorded in Columbio, Sultan Kudarat with Intensity three.
The rebels also abducted two soldiers in the town of Columbio, Sultan Kudarat province, on Thursday morning.
Sakaluran said the project which costs P20 million under his Priority Development Assistance Project is targeting some 100, 000 seedlings of rubber trees that will be planted in the towns of Lutayan and Columbio in Sultan Kudarat.
Samuel Garay of the Army's 39th Infantry Battalion based in Barangay Telefas in Columbio town.