coulomb


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Related to coulomb: Charles Augustin de Coulomb, ampere, volt, Coulomb barrier

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.

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.

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.

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

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.
References in periodicals archive ?
Coulomb Technologies customers include utilities such as Orlando Utilities Commission and Austin Energy in the US, Nuon in The Netherlands, and ESB in Dublin; municipalities such as City of San Francisco and City of New York in the US, City of Amsterdam in The Netherlands, City of Newcastle in the UK, and City of Bochum in Germany.
Both Coulomb Technologies and National Grid have a strong presence in New York.
Coulomb also provides ChargePoint Network service plans, cloud-based solutions that handle all drivers billing and support, and that give organizations the control and flexibility they need to optimize performance of their electric vehicle charging operations.
A demonstration of the solution integration will be shown at the Plug-In 2011 conference and exhibition in the Coulomb Technologies booth #121, July 18 - 20 in Raleigh, NC.
Kleiner Perkins invests in pioneering industry leaders, companies that define their technology category, as Coulomb has with its ChargePoint solution," said Michael Linse, partner at Kleiner Perkins Green Growth Fund.
Such structures show interesting transport properties governed by Coulomb blockade effects known from individual nanoparticles.
July 6, 2011 /PRNewswire/ -- Entergy Corporation (NYSE: ETR) today announced it is working with Coulomb Technologies to fund and donate 16 electric vehicle charging stations at college campuses in and around Entergy's four-state service area.
Chevrolet, a subsidiary of General Motors Corporation (NYSE: GM), has collaborated with Coulomb Technologies, a provider of electric vehicle charging systems and application services.
The collaboration with Fuji Electric is an important addition to the ChargePoint Network," said Pat Romano, president and CEO of, Coulomb Technologies.
The combined Level I (120V) and Level II (240V) charging stations can charge two electric vehicles simultaneously and are part of a grant administered by Coulomb Technologies' ChargePoint America program.
Auto Business News-4 June 2010-Ford collaborates with Coulomb Technologies(C)2010 ENPublishing - http://www.
Coulomb Technologies announced today that the new electric vehicle (EV) charging station unveiled at Discovery World in Milwaukee is part of Coulomb's ChargePoint[R] Network, the largest network of independently owned charging stations in the world.