| 单词 | anharmonicity |
| 释义 | > as lemmasanharmoˈnicity anharmoˈnicity n. Physics the state or quality of being anharmonic; the extent to which an oscillating physical system deviates from simple harmonic motion. ΘΚΠ the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation > harmonic motion > quality of being anharmonic anharmonicity1936 1936 Ann. Rep. Progr. Chem. 33 53 The values of the fundamental frequencies of the molecules have only been given to within 10cm.−1, since corrections have not been made for anharmonicity. 1940 S. Glasstone Text-bk. Physical Chem. viii. 558 For most purposes the anharmonicity of the oscillations may be neglected. 1974 Gill & Willis Pericyclic Reactions vi. 208 Substituents which introduce low-lying excited singlet states can dramatically enhance the rates of such reactions by increasing the anharmonicities of the potential energy curves. 1988 Nature 29 Sept. 397/1 The peculiar value of a̱H has been ascribed to other causes—anharmonicity and ‘zero-point’ shifts of energy bands. < as lemmas |
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