| 单词 | rotatory power |
| 释义 | > as lemmasrotatory power rotatory power n. Physical Chemistry the capacity of a substance to cause rotation of the plane of polarization when plane-polarized light is passed through it; spec. the angle displacement per unit distance travelled by the light through the substance; more fully optical rotatory power; cf. rotation n. 5.specific rotatory power: see the first element. ΚΠ 1821 Brit. Critic 16 503 We think the exception completely overthrows M. Biot's hypothesis of the rotatory power being absolutely inherent in the ultimate particles of matter. 1868 H. Watts Dict. Chem. V. 920 The diversities of character exhibited by turpentine-oils..relate chiefly to the specific gravity, boiling-point, and optical rotatory power. 1913 Proc. Royal Soc. A. 88 439 The effect was attributed to an increase in the optical rotatory power of the sugars by the acid. 2005 G. Chartier Introd. Optics v. 203 The rotatory power of quartz has a specially high value of the order of 20°/mm. < as lemmas |
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