| 单词 | point of incidence |
| 释义 | > as lemmaspoint of incidence angle of incidence: see angle of incidence n. at angle n.2 Phrases 2e. axis of incidence, the perpendicular or normal to the surface at the point of incidence. cathetus of incidence (see quot. 1728 at cathetus n.). plane of incidence, the plane through the line of incidence and the normal to the surface. point of incidence, incidence-point, the point at which the line of incidence meets the surface. †ray of incidence, an incident ray, a ray which falls upon a reflecting or refracting surface.extracted from incidencen.point of incidence point of incidence n. Optics the point at which a ray meets a surface. ΚΠ 1644 K. Digby Two Treat. i. xiii. 114 Refraction is greater or lesser..when one body reflecteth light from the same point of incidence in a shorter line and in a greater angle, then an other doth. 1704 I. Newton Opticks i. i. 3 The Perpendicular to the reflecting or refracting Surface at the Point of Incidence. 1854 L. Tomlinson tr. D. F. J. Arago Pop. Lect. Astron. 3 DO will be the direction of the reflected ray, and the point I, where it cuts the surface of the mirror, will be the point of incidence. 1993 Gloss. Terms Particle Technol. (B.S.I.) 19/2 The plane tangent to the diffusion at the point of incidence of the beam. < as lemmas |
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