# 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.
], 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
. 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
; 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 ?
By monitoring the coulombic efficiency, researchers can make a well-informed judgement about the quality of the cell.
The sizes of the surfaces of these amplitude functions at the selected values according to a particular criterion of enclosed electronic charge are, in contrast, a result of the coulombic potential energy, and are seen to be approximately common to amplitude functions, expressed in various coordinates, corresponding to the same energy quantum number n.
c) The atomistic mechanism behind the observed overall stabilizing effect, presumably, is guided by the ion pair formation between the protein's charged groups and the [ch][dhp] components, with a prevailing role of restructured hydrogen-bonded networks facilitated mostly by Coulombic interaction between the [dhp] anions and solvent-exposed positively charged amino groups of [alpha]-CT.
Keywords Cathodic electrodeposition, Electrodeposition yield, Coulombic yield, Dry film thickness, Modified epoxidized cardanol-formaldehyde novolacs
This could be attributed to an increase in coulombic forces that prevented a fast desorption.
1 Planck scale Coulombic energy and the unified force
For acetate and glucose the total coulombic conversion efficiencies were 75 [+ or -] and 59 [+ or -] 4%, respectively, at loading rates of 1.
In addition to coulombic forces, the non-ionic interactions between the dye molecules and the polymer side-chains contribute towards the binding mechanism.
Enhanced Coulombic Efficiency and Power Density of AirCathode Microbial Fuel Cells with an Improved Cell Configuration.
A brightener is classified as a nitrogen or sulfur containing compound, that by coulombic attraction, forms a layer on the copper (Cu) surface where it enters, together with chloride ion ([Cl.
4] is also a correlated electron system, where the electrons are localized at the atomic sites and lose their mobility due to the strong Coulombic repulsion.
Coulombic forces act on the resulting conductivity gradient driving the fluid from low to high areas of conductivity (low to high temperature areas) (Ramos et al.

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