Convection Current

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convection current

[kən′vek·shən ‚kər·ənt]
(electronics)
The time rate at which the electric charges of an electron stream are transported through a given surface.
(geophysics)
Mass movement of subcrustal or mantle material as the result of temperature variations.
(meteorology)
Any current of air involved in convection; usually, the upward-moving portion of a convection circulation, such as a thermal or the updraft in cumulus clouds. Also known as convective current.

Convection Current

 

the transfer of electric charges by the movement of a charged macroscopic body. From the viewpoint of electron theory, any transfer of charges is, in the final analysis, due to the convection (or movement) of charged microparticles. This explains the complete identity between the magnetic properties of convection current and a conduction current (that is, the ordered movement of electrons, ions, and other particles relative to a body), which was established by the experiments of the American physicist G. Rowland (1879) and the Russian physicist A. A. Eikhenval’d (1903).

convection current

The transfer of heat that results from the movement of air from one location to another, usually as a result of a stream of air produced by thermal convection caused by differences in temperature.
References in periodicals archive ?
Consider the role of heat energy and convection currents in the movement of tectonic plates.
Physically this can be justified, because in the process of externally cooling of the plate, the free convection currents travel away from the plate.
The convection currents inside the liquid and at the solid liquid interface are ignored;
The effects of the permeability parameter (K) and free convection currents (both Gr and Gm) on the velocity field are shown in Fig.
In reality, enormous convection currents are present both on the solar surface and within the solar interior.
The answer is that convection currents are dredging it up from the star's tiny, dense core, where many heavy elements are currently being synthesized as the giant nears the end of its life.
Before their data streams of convection currents and computer modelling of pressure differentials, weather forecasters would present their prognostications in far more dogmatic fashion.
Indeed, convection currents in the mantle are responsible for most of the volcanic and tectonic processes that we see at Earth's surface.
Then somebody at the table next to you lights up a cigarette and the convection currents happen to be flowing in your direction.