air coren.

Brit.

/ˈɛː kɔː/, U.S.

/ˈɛr ˌkɔr/

Origin: Formed within English, by compounding. Etymons: air n.¹, core n.¹

Etymology: < air n.¹ + core n.¹

An air-filled space forming the central core of a transformer, coil, etc. Chiefly attributive, designating an electrical device having such a core, as opposed to a solid core of magnetic material.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > transformer > [adjective]

air core1894

the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [adjective] > relating to coil

right-handed1876

air core1894

1894 London, Edinb., & Dublin Philos. Mag. 5th Ser. 37 405 The air-core transformer used for the experiment consisted of two coils wound one inside the other.

1928 G. E. Sterling & R. S. Kruse Radio Man. i. 20 The most commonly employed inductance at radio frequencies consists of a single layer coil wound as an air core solenoid.

1936 R. S. Glasgow Princ. Radio Engin. iv. 79 At high frequencies the loss in the core becomes a serious factor..and an air core is used.

1961 M. G. Say Electr. Engineer's Ref. Bk. (ed. 10) ii. 70 Reactors are employed to limit the current which may flow in a circuit under fault conditions..and may be of the air-core or iron-core types.

2000 J. McFall tr. K. Wille Physics of Particle Accelerators iii. 59 Such fields [of over 5 tesla] can only be produced by air core magnets, because the saturation effect means that iron may no longer be used.

Derivatives

ˈair-cored adj. having an air core.

ΚΠ

1936 Proc. Royal Soc. A. 157 134 The external magnetic field was supplied by an air-cored electromagnet, located outside the cryostat.

2003 Electronics World Jan. 25/2 Apart from air-cored types, inductive components are usually more quasi-linear due to their core materials.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021).

单词	air core
释义	air coren. Brit. /ˈɛː kɔː/, U.S. /ˈɛr ˌkɔr/ Origin: Formed within English, by compounding. Etymons: air n.¹, core n.¹ Etymology: < air n.¹ + core n.¹ An air-filled space forming the central core of a transformer, coil, etc. Chiefly attributive, designating an electrical device having such a core, as opposed to a solid core of magnetic material. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > transformer > [adjective] air core1894 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [adjective] > relating to coil right-handed1876 air core1894 1894 London, Edinb., & Dublin Philos. Mag. 5th Ser. 37 405 The air-core transformer used for the experiment consisted of two coils wound one inside the other. 1928 G. E. Sterling & R. S. Kruse Radio Man. i. 20 The most commonly employed inductance at radio frequencies consists of a single layer coil wound as an air core solenoid. 1936 R. S. Glasgow Princ. Radio Engin. iv. 79 At high frequencies the loss in the core becomes a serious factor..and an air core is used. 1961 M. G. Say Electr. Engineer's Ref. Bk. (ed. 10) ii. 70 Reactors are employed to limit the current which may flow in a circuit under fault conditions..and may be of the air-core or iron-core types. 2000 J. McFall tr. K. Wille Physics of Particle Accelerators iii. 59 Such fields [of over 5 tesla] can only be produced by air core magnets, because the saturation effect means that iron may no longer be used. Derivatives ˈair-cored adj. having an air core. ΚΠ 1936 Proc. Royal Soc. A. 157 134 The external magnetic field was supplied by an air-cored electromagnet, located outside the cryostat. 2003 Electronics World Jan. 25/2 Apart from air-cored types, inductive components are usually more quasi-linear due to their core materials. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021). < n.1894
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