单词 | ordinary ray |
释义 | > as lemmasordinary ray ordinary ray n. Optics (in double refraction) the ray which obeys the normal laws of refraction (cf. extraordinary ray at extraordinary adj. 1d). ΚΠ 1831 D. Brewster Treat. Optics xvii. §90. 146 The ray..is refracted according to the ordinary law of refraction..[and] is therefore called the ordinary ray. 1953 S. F. Mason Hist. Sci. xviii. 167 The ordinary and extraordinary rays were interconverted when the crystals were placed at right angles. 1993 Paleobiology 19 294/2 Because the calcite is birefringent, off-axis light impinging on the cornea could have resulted in a double image formation, one formed by the extraordinary rays (e-rays) and one formed by the ordinary rays (o-rays). < as lemmas |
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