A lens, by which the rays of the sun may be concentrated on an object, so as to burn it if combustible.
| 单词 | θ217289 |
| 释义 | society > occupation and work > materials > fuel > material for igniting > [noun] > other means of ignition (9) burning-glass1570 A lens, by which the rays of the sun may be concentrated on an object, so as to burn it if combustible. sunglass1591 A lens for concentrating the rays of the sun so as to set light to combustible material. Cf. burning-glass, n. salamander1698 Applied to various articles used in fire or capable of withstanding great heat. An iron or poker used red-hot for lighting a pipe, igniting… fire bottle1708 a bottle or vial of phosphorus or other flammable material, used to start a fire or (formerly) as an incendiary weapon (cf. firepot, n. 1). fireworks1743 In plural. North American. Equipment for kindling a fire. Obsolete. sunglass1801 A filter of darkened glass fitted to a sextant, telescope, etc., to reduce the intensity of the sun's light during observation. Now chiefly historical… eupyrion1827 The name given by the inventor to a contrivance for obtaining a light instantaneously; see quot. 1827. Also figurative. burning-lens1831 Subcategories:— focus of glass (1) |
| 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。