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.

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 ?
One ampere of current represents one coulomb of electrical charge (6.24 x 10 [conjunction] 18 charge carriers) moving past a specific point in one second.(whatis.techtarget.
Skrypnik, "Periodic and bounded solutions of the Coulomb equation of motion of two and three point charges with equilibrium in the line," Ukrainian Mathematical Journal, vol.
Charge passed (c) Chloride ion permeability >4,000 High 2,000-4,000 Moderate 1,000-2,000 Low 100-1,000 Very low <100 Negligible Table 4: Result of compressive strength, charge passed coulomb, chloride diffusion coefficient, and porosity of concrete.
The equation of motion of the one-degree-of-freedom shock isolation system with Coulomb friction for the first phase during the shock is given by
Lodge did not mention explicitly the Coulomb potential of the central point that was assumed to be a geometrical point, but it seems that he was well aware of its uniqueness.
When electrons transferred at the surface of films, electrons would be scattered in interspace, and there would be Coulomb blockade effect.
Such choices are gauges, and the most common ones are Lorentz and Coulomb gauges [29].
Auto Business News-July 25, 2012--BMW AG to invest in Coulomb Technologies(C)1994-2012 ENPublishing - http://www.enpublishing.co.uk
It is well known that the exact solutions of these wave equations are only possible in a few simple cases such as the harmonic oscillator, the coulomb, pseudo harmonic potentials and others (IKHDAIR; SEVER, 2006, 2008; LANDAU; LIFSHITZ, 1977; NEITO, 1979; SCHIFF, 1968).
Electric vehicle charging solutions company Coulomb Technologies announced on Wednesday that its ChargePoint stations for electric vehicles (EV)have been installed by aircraft manufacturer The Boeing Company (NYSE:BA) on four of its campuses, in response to employee requests for EV charging at work.