| 单词 | chemical fog |
| 释义 | > as lemmaschemical fog chemical fog n. fog produced by the action of chemicals; spec.: (a) Photography a diffuse background darkening in a photographic film or paper caused by a chemical reaction with substances in the developing solution, the atmosphere, etc. (cf. fog n.2 4); (b) a cloud of suspended particles or droplets in the air resembling fog or smoke and produced by the release of chemicals. ΚΠ 1858 C. P. Smyth Astron. Exper. Peak of Teneriffe iv. i. 402 At and near the sea-level, our photographic camera saw only a dim outline of a mountain, looming through a chemical fog. 1901 Trans. Amer. Microsc. Soc. 1900 22 45 After the slide is fixed..swab it over with a tuft of cotton immersed in a weak solution of ferricyanide of potassium... This will remove all chemical fog and clear up the whole image. 1952 Class. Jrnl. 47 286/1 Natural dust is as effective a smoke-screen as any chemical fog laid down by modern ship or plane. 1995 Europe–Asia Stud. 47 499 The technology..created intense atmospheric and water pollution. This was especially unfortunate because of Kremikovsti's proximity to Sofia, over which it created a permanent chemical fog. 2004 G. Saxby Pract. Hologr. (ed. 3) v. 62 To prevent the developer from attacking unexposed crystals (‘chemical fog’) it is usual to add a restrainer. < as lemmas |
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