单词 | ionizer |
释义 | ionizern. A thing that causes ionization; a source of ions; spec. (in later use) any of several devices which increase the number of negatively charged ions in the air, used for air purification and therapeutically. ΘΚΠ the world > matter > physics > atomic physics > ion > ionization > [noun] > that which produces ionizer1899 1899 J. J. Thomson in London, Edinb. & Dublin Philos. Mag. 5th Ser. 47 265 The gas between LM and B is screened off from the action of the ionizer. 1933 Discovery Apr. 107/2 This recoiling nucleus, on the other hand, is an efficient ionizer. 1967 S. W. Tromp et al. Biometeorol. II. ii. 1025 Sufficient ion concentration can be achieved in the centre of a room by inconspicuous ionizers. 1978 Audubon Mar. 16/3 In Europe, air ionizers are used in sickrooms and homes. 1987 Science 1 May 546 (caption) The negative ions are extracted through the center of the ionizer. 2006 Nexus (U.K./Europe ed.) Feb. 4/3 As soon as any discomfort or pain or anxiety hit me, I grabbed the ioniser and after a lie down for 20 minutes I felt refreshed and new again. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1899 |
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