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单词 limiting angle
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limiting angle
limiting angle n. Optics the largest angle of incidence (between the ray and the perpendicular to the surface) for which a ray will pass from a dense medium into a less dense one.An incident ray striking at a larger angle (i.e. a more glancing ray) is reflected, and does not enter the other medium.
ΚΠ
1782 Philos. Trans. 1781 (Royal Soc.) 71 408 DE will be the measure of the limiting angle which can be observed by this construction.
1881 W. B. Carpenter Microscope (ed. 6) i. 3 The ‘limiting angle’ for Flint-glass, its index of refraction being 1.60, is 38° 41'.
2003 D. H. Goldstein Polarized Light (ed. 2) xxvi. 521 A similar computation is required for the limiting angle for the extraordinary ray at which total reflection does not occur.
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更新时间:2025/1/24 5:02:46