x-ray reflection
51angle of reflection — an′gle of reflec′tion n. phs the angle that a reflected ray, as of light, makes with a normal to the surface at the point of reflection • Etymology: 1630 …
52angle of reflection — noun the angle that a ray of light, or the like, reflected from a surface, makes with a perpendicular to that surface at the point of reflection …
53total internal reflection — noun the total reflection of a light ray which occurs when light from one medium strikes the surface of a medium of lower refractive index or optical density in excess of the critical angle …
54convergent ray — a ray that is approaching a focus; it may be produced by passage through a convex lens or by reflection from a concave mirror …
55angle of reflection — Date: 1638 the angle between a reflected ray and the normal drawn at the point of incidence to a reflecting surface …
56angle of reflection — noun The angle between the perpendicular and a ray reflected from a surface …
57incident ray — see reflection (def. 2), and refraction (def. 2) …
58reflected ray — see reflection (def. 2) …
59angle of reflection — noun Physics the angle made by a reflected ray with a perpendicular to the reflecting surface …
60angle of reflection — noun the angle between a reflected ray and a line perpendicular to the reflecting surface at the point of incidence • Hypernyms: ↑angle …