coulomb

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Related to coulombic: magnetic force, Coulomb potential

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 ?
Keywords Cathodic electrodeposition, Electrodeposition yield, Coulombic yield, Dry film thickness, Modified epoxidized cardanol-formaldehyde novolacs
C] = assumed Coulombic energy coefficient of the semi-empirical mass formula a [M.
More than 90% of the protons and electrons produced by the bacteria from the oxidation of acetate were recovered as hydrogen gas with an overall coulombic efficiency (total recovery of electrons from acetate) of 60-78%.
If an electron's behavior is controlled by the laser field rather than the coulombic attraction of the nucleus, that's altogether a new regime.
Both fields involve the study of Coulombic fluids for academic and industrial purposes; both employ the same principles; both require skilled practitioners; both speak the same language; all then that is truly different is their semantics, and how superficial is that?
For fermions with long-range interactions such as dipolar and Coulombic systems, diagrammatic Monte Carlo will also be developed.
Coulombic efficiency is the ratio of the amount of charge obtained from the battery during the discharge, compared to the amount of charge that was stored in the battery during the charge.
This researcher found that classical dynamical calculations for the ground-state hydrogen molecule using a Coulombic force between the bond electrons along with spectroscopic data yielded a vibrational frequency of 2.
The "brightener," by coulombic attraction, forms a layer on the surface where the additive assists in the refinement of the copper grain structure as it is deposited.
Sun and Stirner (2001) used molecular dynamics to study the compression of 2-D polystyrene particles at an oil-water interface through monopole-monopole Coulombic interactions.