| 单词 | caustic line, surface |
| 释义 | > as lemmascaustic line, surface 3. Mathematics. Epithet of a curved surface formed by the ultimate intersection of luminous rays proceeding from a single point and reflected or refracted from a curved surface; also of the curve formed by a plane section of a caustic surface. A caustic by reflexion is called a catacaustic adj. and n., that by refraction a diacaustic n. So caustic line, surface.[So called because the intensity of the light, and consequently of the heat, is in general greater at a point on this surface than at neighbouring points not on it, and at special points may become sufficiently intense to initiate combustion in a body there placed. The focus of a concave mirror is the cusp of its caustic for incident parallel rays.] ΘΚΠ the world > relative properties > number > geometry > curve > [adjective] > other caustic1728 hypotrochoidal1843 hodographic1847 Pippian1857 tetrazomal1867 trizomal1867 three-bar1875 sinusoidal1878 1728 E. Chambers Cycl. Caustic Curve, in the higher Geometry, a Curve form'd by the Concourse, or Coincidence of the Rays of Light reflected, or refracted from some other Curve. 1869 J. Tyndall Notes 9 Lect. on Light §101 The interior surface of a common drinking-glass is a curved reflector. Let the glass be nearly filled with milk, and a lighted candle placed beside it, a caustic curve will be drawn on the surface of the milk. 1869 J. Tyndall Notes 9 Lect. on Light §166 Spherical lenses have their caustic curves and surfaces formed by the intersection of the refracted rays. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。