convectionn.

/kənˈvɛkʃən/

Etymology: < Latin convectiōn-em, noun of action < convehĕre : see convect v.

Physics.

a. The action of carrying; conveyance; spec. the transportation of heat or electricity by the movement of a heated or electrified substance, as in the ascension of heated air or water.

ΘΚΠ

the world > matter > physics > energy or power of doing work > [noun] > transmission of energy > convection

convection1623

the world > matter > physics > electromagnetic radiation > heat > transmission of heat > [noun] > convection

convection1834

1623 H. Cockeram Eng. Dict. Conuexion, a bearing.

1834 W. Prout Chem., Meteorol. & Function Digestion ii. v. 246 The process by which heat is communicated through water, we have termed convection.

1863 J. Tyndall Heat 177.

1869 E. A. Parkes Man. Pract. Hygiene (ed. 3) 371 Heat is communicated by radiation, conduction, and convection.

1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) I. 56 The passage of electricity from one place to another by the motion of charged particles is called Electrical Convection or Convective Discharge.

b. attributive, as in convection current.

ΚΠ

1868 B. Stewart in Macmillan's Mag. July 254 There are..convection currents in constant operation all over the disc.

Draft additions 1993

convection cell n. a relatively stable and self-contained region of convection (usually one of a number) in which the upward motion of warmer fluid at the centre is balanced by the downward motion of cooler fluid at the periphery.

ΘΚΠ

the world > matter > physics > energy or power of doing work > [noun] > transmission of energy > convection > self-contained area of

convection cell1934

1934 D. Brunt Physical & Dynamical Meteorol. xii. 213 There is a type of eddy which can be produced and made visible in the laboratory, that has become known largely through the work of H. Bénard, for which the name of ‘convection cell’ is suggested as appropriate.

1983 Geophysical Res. Lett. 10 421/1 An uncompensated depression is consistent with the downgoing arm of a convection cell.

This entry has not yet been fully updated (first published 1893; most recently modified version published online September 2018).

单词	convection
释义	convectionn. /kənˈvɛkʃən/ Etymology: < Latin convectiōn-em, noun of action < convehĕre : see convect v. Physics. a. The action of carrying; conveyance; spec. the transportation of heat or electricity by the movement of a heated or electrified substance, as in the ascension of heated air or water. ΘΚΠ the world > matter > physics > energy or power of doing work > [noun] > transmission of energy > convection convection1623 the world > matter > physics > electromagnetic radiation > heat > transmission of heat > [noun] > convection convection1834 1623 H. Cockeram Eng. Dict. Conuexion, a bearing. 1834 W. Prout Chem., Meteorol. & Function Digestion ii. v. 246 The process by which heat is communicated through water, we have termed convection. 1863 J. Tyndall Heat 177. 1869 E. A. Parkes Man. Pract. Hygiene (ed. 3) 371 Heat is communicated by radiation, conduction, and convection. 1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) I. 56 The passage of electricity from one place to another by the motion of charged particles is called Electrical Convection or Convective Discharge. b. attributive, as in convection current. ΚΠ 1868 B. Stewart in Macmillan's Mag. July 254 There are..convection currents in constant operation all over the disc. Draft additions 1993 convection cell n. a relatively stable and self-contained region of convection (usually one of a number) in which the upward motion of warmer fluid at the centre is balanced by the downward motion of cooler fluid at the periphery. ΘΚΠ the world > matter > physics > energy or power of doing work > [noun] > transmission of energy > convection > self-contained area of convection cell1934 1934 D. Brunt Physical & Dynamical Meteorol. xii. 213 There is a type of eddy which can be produced and made visible in the laboratory, that has become known largely through the work of H. Bénard, for which the name of ‘convection cell’ is suggested as appropriate. 1983 Geophysical Res. Lett. 10 421/1 An uncompensated depression is consistent with the downgoing arm of a convection cell. This entry has not yet been fully updated (first published 1893; most recently modified version published online September 2018). < n.1623
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