convection – מילון אנגלי-אנגלי
convection
n.
circulation of heat; thermal conduction, transmission of heat by circulatory movement in a fluid or gas that results in areas of different temperatures and distinctive densities which rise and fall in reaction to gravity (Physics); conveying, act of transmitting, act of transporting; (Meteorology) upright movement of heat in enormous motion inside the atmosphere
Convection
Convection is the concerted, collective movement of groups or aggregates of
molecules within
fluids (e.g.,
liquids,
gases) and
rheids, through
advection or through
diffusion or as a combination of both of them. Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but that is called
heat conduction. Convection can be demonstrated by placing a heat source (e.g. a
Bunsen burner) at the side of a glass full of a liquid, and observing the changes in temperature in the glass caused by the warmer ghost fluid moving into cooler areas.
convection
Noun
1. the transfer of heat through a fluid (liquid or gas) caused by molecular motion
(hypernym) temperature change
2. (meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere
(hypernym) natural process, natural action, action, activity
(derivation) convect
(classification) meteorology
convection
n.
proudění vzduchu; konvekce
Convection
(n.)
The act or process of conveying or transmitting.
(n.)
A process of transfer or transmission, as of heat or electricity, by means of currents in liquids or gases, resulting from changes of temperature and other causes.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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