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 ?
The team hopes they will be able to calculate electrical and thermal conductivities of electrons due to inelastic electron-phonon scattering in strongly magnetized Coulomb crystals.
Coulomb gauge Green's function enables us to resolve the nonphysical problem by replacing the solenoidal volume current [J.
235]U, respectively, one can conclude that the highest value of Coulomb interaction energy between complementary fragments corresponds to fragmentations ([sup.
Uno de los diversos fundamentos juridicos esgrimidos por Coulomb se encuentra en el articulo 91 del Estatuto de Gobierno del Distrito Federal, el cual senala: Para la eficaz atencion y eficiente despacho de los asuntos de su competencia, el jefe de Gobierno podra construir organos administrativos desconcentrados, diferentes de los organos politico-administrativos de las demarcaciones territoriales, que estaran jerarquicamente subordinados al propio jefe de Gobierno del Distrito Federal (.
We are proud to be partners with Governor Cuomo, NYSERDA and Coulomb in making electric charging stations easier to access throughout New York State.
The ChargePoint service plans will be showcased at the Plug-in 2011 show in the Coulomb Technologies Booth #121, July 18 - 20 in Raleigh, NC.
Coulomb technologies is a leader in the electric vehicle charging systems and application services with the charge point networking now operating in 14 countries.
Y a la cotidiana degradacion de ese espacio asolado por el comercio callejero, los asaltos, el amontonamiento de automoviles y vehiculos de carga, la contaminacion del aire, la agresion del ruido ensordecedor y los empujones entre quienes por ahi deambulaban se agrega ese sismo invisible, avistado por Coulomb, quien enfatiza:
In 1784, French physicist Charles-Augustin de Coulomb developed the torsion-balance electrometer, a sensitive device that measures electric forces.
Our new investors bring a wealth of industry acumen and expertise in driving commercial scale around innovative technologies," said Pat Romano, president and chief executive officer of Coulomb Technologies.
Auto Business News-January 20, 2011--Chevrolet collaborates with Coulomb Technologies(C)1994-2011 ENPublishing - http://www.
The Coulomb can be used in the developments of high-voltage insulators and bushings, microelectromechanical systems (MEMS), switchgears, power transmission lines, telecommunication cables, lenses for beam deflection, and microstrip and integrated circuits.