electromagnetn.

Brit.

/ᵻˌlɛktrə(ʊ)ˈmaɡnᵻt/, U.S.

/əˌlɛktrəˈmæɡnət/,

/iˌlɛktrəˈmæɡnət/

Origin: Formed within English, by compounding; perhaps modelled on French lexical items. Etymons: electro- comb. form, magnet n.

Etymology: < electro- comb. form + magnet n., probably after either electromagnetic adj. (or its etymon French électro-magnétique) or French électro-magnétisme electromagnetism n. Compare French électro-aimant (1832; the word does not appear in the works referred to in quot. 1821).

A magnet in which the magnetic force is produced by passing an electric current; spec. a piece of metal (typically soft iron) enclosed within a wire in such a way that the arrangement acts as a magnet when an electric current is passed through the wire.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > magnet

bar magnet1821

electromagnet1821

tension magnet1891

growler1922

the world > matter > physics > electromagnetic radiation > magnetism > magnetic devices or materials > [noun] > a magnet > electromagnet

electromagnet1821

1821 Ann. Philos. New Ser. 2 288 De la Rive describes the construction of two small apparatus, intended to show two of the experiments made by Ampere, the attraction of an electrical current by a magnet, and his artificial electro-magnet.

1822 Ann. Philos. New Ser. 3 119 There is a similarity between the natural magnet and the helice electro-magnet of M. Ampere.

1833 Philos. Trans. (Royal Soc.) 123 317 Having constructed, with great pains, an electro-magnet according to the American method, and connected it with a battery, I found it would lift about one hundred and forty pounds.

1866 Q. Jrnl. Sci. 12 504 Magneto-electric machines..in which electro-magnets had been substituted for permanent magnets.

1867 R. S. Culley Handbk. Pract. Telegr. (ed. 2) ix. 184 Siemens' relay consists of an electromagnet of the usual horse-shoe form.

1927 H. W. Secor & J. H. Kraus Television iii. 15 As the incoming picture signals are passed through an electromagnet or solenoid, it is caused to open and close a light shutter.

1962 A. MacLean Satan Bug iii. 47 I heard the heavy thud as the last spin of the dial energized the powerful electromagnets that withdrew the heavy central bolt.

1990 Lifestyle Summer 18/2 Local authorities can purchase a special electro-magnet which actually picks out the cans from collected household waste.

2002 F. Close et al. Particle Odyssey viii. 154 (caption) The superconducting magnets, which are cooled by liquid helium to their operating temperature of −269 C (4.4 K), can run at higher electric currents than conventional copper electromagnets.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	electromagnet
释义	electromagnetn. Brit. /ᵻˌlɛktrə(ʊ)ˈmaɡnᵻt/, U.S. /əˌlɛktrəˈmæɡnət/, /iˌlɛktrəˈmæɡnət/ Origin: Formed within English, by compounding; perhaps modelled on French lexical items. Etymons: electro- comb. form, magnet n. Etymology: < electro- comb. form + magnet n., probably after either electromagnetic adj. (or its etymon French électro-magnétique) or French électro-magnétisme electromagnetism n. Compare French électro-aimant (1832; the word does not appear in the works referred to in quot. 1821). A magnet in which the magnetic force is produced by passing an electric current; spec. a piece of metal (typically soft iron) enclosed within a wire in such a way that the arrangement acts as a magnet when an electric current is passed through the wire. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > magnet bar magnet1821 electromagnet1821 tension magnet1891 growler1922 the world > matter > physics > electromagnetic radiation > magnetism > magnetic devices or materials > [noun] > a magnet > electromagnet electromagnet1821 1821 Ann. Philos. New Ser. 2 288 De la Rive describes the construction of two small apparatus, intended to show two of the experiments made by Ampere, the attraction of an electrical current by a magnet, and his artificial electro-magnet. 1822 Ann. Philos. New Ser. 3 119 There is a similarity between the natural magnet and the helice electro-magnet of M. Ampere. 1833 Philos. Trans. (Royal Soc.) 123 317 Having constructed, with great pains, an electro-magnet according to the American method, and connected it with a battery, I found it would lift about one hundred and forty pounds. 1866 Q. Jrnl. Sci. 12 504 Magneto-electric machines..in which electro-magnets had been substituted for permanent magnets. 1867 R. S. Culley Handbk. Pract. Telegr. (ed. 2) ix. 184 Siemens' relay consists of an electromagnet of the usual horse-shoe form. 1927 H. W. Secor & J. H. Kraus Television iii. 15 As the incoming picture signals are passed through an electromagnet or solenoid, it is caused to open and close a light shutter. 1962 A. MacLean Satan Bug iii. 47 I heard the heavy thud as the last spin of the dial energized the powerful electromagnets that withdrew the heavy central bolt. 1990 Lifestyle Summer 18/2 Local authorities can purchase a special electro-magnet which actually picks out the cans from collected household waste. 2002 F. Close et al. Particle Odyssey viii. 154 (caption) The superconducting magnets, which are cooled by liquid helium to their operating temperature of −269 C (4.4 K), can run at higher electric currents than conventional copper electromagnets. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1821
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