| 单词 | angle of refraction |
| 释义 | > as lemmasangle of refraction angle of refraction n. [compare French angle de réfraction (1637)] Optics (originally) †the angle which a refracted ray of light makes with the continuation of the incident ray (obsolete); (in later use) the angle which a refracted ray makes with a line normal to the surface of the refracting medium at the point of incidence. ΚΠ 1656 tr. T. Hobbes Elements Philos. iii. xxiv. 280 The Angle of Refraction, is that which the Refracted line makes with the Line of Incidence produced. 1760 J. Ferguson Lect. Select Subj. 214 When the refracting medium is water, the sine of the angle of incidence is to the sine of the angle of refraction, as 4 to 3. 1880 Times 10 Apr. 8/7 The sine of the angle of incidence..divided by the sine of the angle of refraction, is a constant quantity, and this is known now as the ‘index of refraction’. 2002 Limnol. & Oceanogr. 47 347/1 θ is the angle of refraction of the direct component of sunlight near the water surface. angle of refraction angle of refraction, axis of refraction, index of refraction, plane of refraction, etc.; conical refraction, double refraction, seismic refraction, etc.: see the first element.extracted from refractionn.< as lemmas |
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