| 释义 |
refracting, ppl. a.|rɪˈfræktɪŋ|
[-ing2.]
1. Causing refraction; refractive.
1704Newton Optics (1721) 4 Def. iv, The Perpendicular to the reflecting or refracting Surface at the Point of Incidence. 1743Emerson Fluxions 282 To find the Motion of a Ray of Light passing into a refracting Medium. 1837Goring & Pritchard Microgr. 182 The rays..should traverse both the refracting surfaces without any obliquity. 1851Nichol Archit. Heav. (ed. 9) 115 The magnitude of its reflecting disc, or refracting lens. 1898Allbutt's Syst. Med. V. 886 The fibres..present a few refracting granules.
b. Provided with some apparatus or arrangement for refracting light; esp. refracting telescope, a telescope in which the rays of light are converged to a focus by an object glass.
1764Hornsby in Phil. Trans. LIV. 145 An excellent refracting telescope of 12 feet focus. 1823J. Badcock Dom. Amusem. 119 Expose it..to the light of a refracting lamp. 1870Daily News 8 Oct., A magnificent refracting telescope, with an object-glass of 25 inches diameter. 1896Orford Mod. Optical Instr. 95 In the refracting stereoscope the rays of light..are always bent towards the thicker part of the lens.
c. refracting angle, the angle between two faces of a prism or lens.
1796H. Brougham in Phil. Trans. LXXXVI. 262 An hollow prism made of fine plate-glass,..its refracting angle being 55°. 1890Woodbury Encycl. Photogr. 394 A divergence from the axis will take place, becoming more and more marked as the refracting angles become greater towards the edge of the lens.
2. Undergoing refraction. rare—1.
1718Rowe tr. Lucan iv. 119 Unvary'd by the Light's refracting Beam She stoop'd to drink from Ocean's briny Stream.
3. That resists fire; = refractory A. 4.
1894R. S. Burn's Steam Engine User 145 The interior, especially of the furnace proper,..and the combustion chamber being lined with ‘refracting’ bricks, generally termed fire-bricks. |