| 释义 |
burning-glass|ˈbɜːnɪŋ glɑːs, -æ-|
A lens, by which the rays of the sun may be concentrated on an object, so as to burn it if combustible.
1570Dee Math. Pref. 35 Archimedes..with his Burning Glasses..fired their other Shippes a far off. 1598Shakes. Merry W. i. iii. 74 The appetite of her eye did seeme to scorch me vp like a burning-glasse. 1643Caryl Sacr. Covt. 33 The fiery beames of Gods wrath are contracted into this burning-Glasse. 1727Swift Gulliver iii. i. 180, I had about me my flint, steel, match, and burning-glass. 1768Tucker Lt. Nat. II. 426 Not unlike the virtuoso's scheme, who would needs try to make a burning-glass of ice. 1878Masque Poets 213 Beauty is a burning-glass that brings The soft, diffusive sunshine to a focus.
b. A concave mirror, by the use of which the same effect may be produced.
1675Baxter Cath. Theol. i. iii. 11 The Spirits effect on the soul to come by reflection..as Light and Heat from the Sun by a Speculum or Burning-Glass. 1751Chambers Cycl. s.v., The second..are concave; very improperly called burning-glasses, being usually made of metal. 1760tr. Keysler's Travels I. 428 A concave burning-glass reflects..the solar rays into one focus. |