quantum mechanicsn.

Brit.

/ˌkwɒntəm mᵻˈkanɪks/, U.S.

/ˈˌkwɑn(t)ə(m) məˈkænɪks/

Origin: Formed within English, by compounding. Etymons: quantum n., mechanics n.

Etymology: < quantum n. + mechanics n.

Physics.

The mathematical description of the motion and interaction of (esp. atomic and subatomic) particles that was developed from the old quantum theory and incorporates the concept of wave–particle duality, the uncertainty principle, and the correspondence principle; the branch of physics concerned with this. Cf. matrix mechanics n. at matrix n. Compounds 2, wave mechanics n.Quantum mechanics is one of two main branches of modern physics (the other being relativity), and supersedes classical (Newtonian) mechanics at the atomic level.In quot. 1922, and perhaps also in quot. 1924, more generally: quantum theory.

ΘΚΠ

the world > matter > physics > quantum theory > quantum mechanics > [noun]

quantum dynamics1921

quantum mechanics1922

1922 Rep. Brit. Assoc. Advancem. Sci. 1921 473 The spectrum theory is far the most important branch of the quantum theory, as it has led and is still leading to extensions of quantum mechanics.

1924 Amer. Math. Monthly 31 126 Perhaps the fundamental directedness of the world events is not expressed in the equations of ordinary dynamics, but strikes its root deeper into the underlying quantum mechanics.

1925 Proc. Royal Soc. A. 109 10 The anomalous Zeeman effect, the quantum mechanics of which has not yet been satisfactorly elucidated.

1935 B. Russell Relig. & Sci. vi. 151 The challenge has come through the study of the atom by the new methods of quantum mechanics.

1956 H. Umezaw Quantum Field Theory i. 1 Quantum mechanics and relativity are respectively characterised by the constants h and C and, when h and (1/C) are taken as vanishingly small, the results of these theories are identical with those of Newtonian mechanics.

1978 Sci. Amer. Feb. 126/3 There is no workable theory of gravitation that is consistent with the principles of quantum mechanics.

1996 H. Marks Mr Nice (1998) ii. 30 I had not read anything outside the ‘S’ level curriculum, and was dreading being asked about relativity or quantum mechanics.

Derivatives

ˌquantum-meˈchanical adj. [ < quantum n. + mechanical adj., after quantum mechanics n.]

ΘΚΠ

the world > matter > physics > quantum theory > quantum mechanics > [adjective]

quantum-mechanical1927

quantum-dynamical1928

1927 Proc. Royal Soc. A. 114 715 One can obtain the result..by using a quantum-mechanical argument.

1949 A. Koestler Insight & Outlook xi. 156 Quantum-mechanical concepts slowly permeate all spheres of physics, chemistry, and..biology.

1995 J. Shreeve Neandertal Enigma (1996) vii. 182 Metaphors are a must, because the nature of this electron ‘spinning’ is quantum mechanical.

ˌquantum-meˈchanically adv. [ < quantum n. + mechanically adv., after quantum mechanics n., quantum-mechanical adj.]

ΘΚΠ

the world > matter > physics > quantum theory > quantum mechanics > [adverb]

quantum-mechanically1929

1929 Proc. National Acad. Sci. U.S.A. 15 755 The rule advanced semi-empirically by Franck and justified quantum-mechanically by Condon.

1963 G. Troup Masers & Lasers (ed. 2) iv. 58 It can be shown quantum-mechanically..that there is a definite probability that A will make the transition 1 → 2 while B makes the transition 3 → 1.

1996 Nature 19 Sept. 215/3 When one tries to think about black holes quantum mechanically, one runs into many difficulties.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	quantum mechanics
释义	quantum mechanicsn. Brit. /ˌkwɒntəm mᵻˈkanɪks/, U.S. /ˈˌkwɑn(t)ə(m) məˈkænɪks/ Origin: Formed within English, by compounding. Etymons: quantum n., mechanics n. Etymology: < quantum n. + mechanics n. Physics. The mathematical description of the motion and interaction of (esp. atomic and subatomic) particles that was developed from the old quantum theory and incorporates the concept of wave–particle duality, the uncertainty principle, and the correspondence principle; the branch of physics concerned with this. Cf. matrix mechanics n. at matrix n. Compounds 2, wave mechanics n.Quantum mechanics is one of two main branches of modern physics (the other being relativity), and supersedes classical (Newtonian) mechanics at the atomic level.In quot. 1922, and perhaps also in quot. 1924, more generally: quantum theory. ΘΚΠ the world > matter > physics > quantum theory > quantum mechanics > [noun] quantum dynamics1921 quantum mechanics1922 1922 Rep. Brit. Assoc. Advancem. Sci. 1921 473 The spectrum theory is far the most important branch of the quantum theory, as it has led and is still leading to extensions of quantum mechanics. 1924 Amer. Math. Monthly 31 126 Perhaps the fundamental directedness of the world events is not expressed in the equations of ordinary dynamics, but strikes its root deeper into the underlying quantum mechanics. 1925 Proc. Royal Soc. A. 109 10 The anomalous Zeeman effect, the quantum mechanics of which has not yet been satisfactorly elucidated. 1935 B. Russell Relig. & Sci. vi. 151 The challenge has come through the study of the atom by the new methods of quantum mechanics. 1956 H. Umezaw Quantum Field Theory i. 1 Quantum mechanics and relativity are respectively characterised by the constants h and C and, when h and (1/C) are taken as vanishingly small, the results of these theories are identical with those of Newtonian mechanics. 1978 Sci. Amer. Feb. 126/3 There is no workable theory of gravitation that is consistent with the principles of quantum mechanics. 1996 H. Marks Mr Nice (1998) ii. 30 I had not read anything outside the ‘S’ level curriculum, and was dreading being asked about relativity or quantum mechanics. Derivatives ˌquantum-meˈchanical adj. [ < quantum n. + mechanical adj., after quantum mechanics n.] ΘΚΠ the world > matter > physics > quantum theory > quantum mechanics > [adjective] quantum-mechanical1927 quantum-dynamical1928 1927 Proc. Royal Soc. A. 114 715 One can obtain the result..by using a quantum-mechanical argument. 1949 A. Koestler Insight & Outlook xi. 156 Quantum-mechanical concepts slowly permeate all spheres of physics, chemistry, and..biology. 1995 J. Shreeve Neandertal Enigma (1996) vii. 182 Metaphors are a must, because the nature of this electron ‘spinning’ is quantum mechanical. ˌquantum-meˈchanically adv. [ < quantum n. + mechanically adv., after quantum mechanics n., quantum-mechanical adj.] ΘΚΠ the world > matter > physics > quantum theory > quantum mechanics > [adverb] quantum-mechanically1929 1929 Proc. National Acad. Sci. U.S.A. 15 755 The rule advanced semi-empirically by Franck and justified quantum-mechanically by Condon. 1963 G. Troup Masers & Lasers (ed. 2) iv. 58 It can be shown quantum-mechanically..that there is a definite probability that A will make the transition 1 → 2 while B makes the transition 3 → 1. 1996 Nature 19 Sept. 215/3 When one tries to think about black holes quantum mechanically, one runs into many difficulties. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1922
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