diamagneticadj.n.

Brit.

/ˌdʌɪəmaɡˈnɛtɪk/, U.S.

/ˌdaɪəˌmæɡˈnɛdɪk/

Etymology: < Greek δια- dia- prefix¹ through, across + magnetic adj. and n.Introduced by Faraday in 1846, first as noun, and then as adjective.

A. adj.

1. Of a body or substance: Exhibiting the phenomena of diamagnetism n.; the opposite of magnetic or paramagnetic.A diamagnetic substance in the form of a bar or the like, when suspended freely and exposed to magnetic force, takes an equatorial position, i.e. at right angles to the lines of the force; a paramagnetic (or magnetic) substance takes an axial position, i.e. in the direction of those lines.

ΚΠ

1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 42 The metals which are magnetic retain a portion of their power after the great change has been effected, or in what might be called their diamagnetic state.

1849 M. Somerville On Connexion Physical Sci. (ed. 8) xxxiii. 369 Substances affected after the manner of bismuth [when suspended between the poles of an electro-magnet] are said to be diamagnetic.

1863–72 H. Watts Dict. Chem. III. 777 The same body may appear magnetic or diamagnetic, according to the medium in which it is placed.

1892 Supplt. to Lightning 7 Jan. 9 Diamagnetic substances are those through which magnetic effects are transmitted less readily than through air.

2. Belonging or relating to diamagnetic bodies, or to diamagnetism.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [adjective] > relating to other forms of magnetism

thermo-magnetic1823

diamagnetic1846

biomagnetic1860

piezomagnetic1901

pyromagnetic1901

speromagnetic1973

1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 26 As I have called air, glass, water, &c. diamagnetics (2149), so I will distinguish these lines by the term diamagnetic curves, both in relation to, and contradistinction from, the lines called magnetic curves.

1851 H. Mayo On Truths Pop. Superstit. (ed. 2) 190 Od-force, which its discoverer now holds to be the same with the diamagnetic influence.

1870 H. Spencer Princ. Psychol. (ed. 2) I. i. iv. 69 Altering the direction of diamagnetic polarity in metals.

B. n.

A body or substance exhibiting the phenomena of diamagnetism n.

ΚΠ

1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 2 By a diamagnetic, I mean a body through which lines of magnetic force are passing, and which does not by their action assume the usual magnetic state of iron or loadstone.

1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 3 §2152 A piece of this glass, about two inches square and 0·5 of an inch thick, having flat and polished edges, was placed as a diamagnetic between the poles.

1871 J. Tyndall Fragm. Sci. (1879) I. xiii. 375 The body used to excite this diamagnetic.

This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022).

单词	diamagnetic
释义	diamagneticadj.n. Brit. /ˌdʌɪəmaɡˈnɛtɪk/, U.S. /ˌdaɪəˌmæɡˈnɛdɪk/ Etymology: < Greek δια- dia- prefix¹ through, across + magnetic adj. and n.Introduced by Faraday in 1846, first as noun, and then as adjective. A. adj. 1. Of a body or substance: Exhibiting the phenomena of diamagnetism n.; the opposite of magnetic or paramagnetic.A diamagnetic substance in the form of a bar or the like, when suspended freely and exposed to magnetic force, takes an equatorial position, i.e. at right angles to the lines of the force; a paramagnetic (or magnetic) substance takes an axial position, i.e. in the direction of those lines. ΚΠ 1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 42 The metals which are magnetic retain a portion of their power after the great change has been effected, or in what might be called their diamagnetic state. 1849 M. Somerville On Connexion Physical Sci. (ed. 8) xxxiii. 369 Substances affected after the manner of bismuth [when suspended between the poles of an electro-magnet] are said to be diamagnetic. 1863–72 H. Watts Dict. Chem. III. 777 The same body may appear magnetic or diamagnetic, according to the medium in which it is placed. 1892 Supplt. to Lightning 7 Jan. 9 Diamagnetic substances are those through which magnetic effects are transmitted less readily than through air. 2. Belonging or relating to diamagnetic bodies, or to diamagnetism. ΘΚΠ the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [adjective] > relating to other forms of magnetism thermo-magnetic1823 diamagnetic1846 biomagnetic1860 piezomagnetic1901 pyromagnetic1901 speromagnetic1973 1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 26 As I have called air, glass, water, &c. diamagnetics (2149), so I will distinguish these lines by the term diamagnetic curves, both in relation to, and contradistinction from, the lines called magnetic curves. 1851 H. Mayo On Truths Pop. Superstit. (ed. 2) 190 Od-force, which its discoverer now holds to be the same with the diamagnetic influence. 1870 H. Spencer Princ. Psychol. (ed. 2) I. i. iv. 69 Altering the direction of diamagnetic polarity in metals. B. n. A body or substance exhibiting the phenomena of diamagnetism n. ΚΠ 1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 2 By a diamagnetic, I mean a body through which lines of magnetic force are passing, and which does not by their action assume the usual magnetic state of iron or loadstone. 1846 M. Faraday in Philos. Trans. (Royal Soc.) 136 3 §2152 A piece of this glass, about two inches square and 0·5 of an inch thick, having flat and polished edges, was placed as a diamagnetic between the poles. 1871 J. Tyndall Fragm. Sci. (1879) I. xiii. 375 The body used to excite this diamagnetic. This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022). < adj.n.1846
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