“You are in mortal danger,” declared their Scientific Officer, Dr. Counterfly, a scholarly sort, bearded and bundled like the rest of them, his eyes concealed by a pair of ingenious goggles, whose lenses proved to be matched pairs of Nicol prisms which could be rotated so as to control precisely the amount of light admitted to each eye.
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Nicol prism — Prism Prism (pr[i^]z m), n. [L. prisma, Gr. pri sma, fr. pri zein, pri ein, to saw: cf. F. prisme.] 1. (Geom.) A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms. [1913 Webster] Note … The Collaborative International Dictionary of English
Nicol prism — or Nicol [nik′əl] n. [after Wm. Nicol (1768? 1851), Brit physicist, who invented it (1828)] a prism consisting of two crystals of clear calcite cemented together, used for obtaining polarized light … English World dictionary
Nicol prism — A Nicol prism A Nicol prism is a type of polarizer, an optical device used to produce a polarized beam of light from an unpolarized beam. See polarized light. It was the first type of polarizing prism to be invented, in 1828 by William Nicol… … Wikipedia
Nicol prism — Nikolio prizmė statusas T sritis fizika atitikmenys: angl. Nicol prism vok. Nicolprisma, n; Nicolsches Prisma, n rus. призма Николя, f pranc. prisme de Nicol, m … Fizikos terminų žodynas
Nicol prism — Nic·ol prism (nikґol) [William Nicol, Scottish physicist, 1768–1851] see under prism … Medical dictionary
Nicol prism — [ nɪk(ə)l] noun a prism for producing plane polarized light, consisting of two pieces of optically clear calcite cemented together with Canada balsam. Origin C19: named after the Scottish physicist William Nicol … English new terms dictionary
Nicol prism — /nik euhl/, Optics. one of a pair of prisms used to produce and analyze plane polarized light in a polarizing microscope. Also called Nicol. Cf. polarizer (def. 1). [1870 75; after William Nicol (1768 1851), British physicist, its inventor] * * * … Universalium
Nicol prism — two slabs of Iceland spar cemented together and deflecting a ray of light in such a way that it is split in two, one part (the ordinary ray) being totally reflected and the other (polarized ray) passing through … Medical dictionary
Nicol prism — noun optical device that produces plane polarized light • Hypernyms: ↑optical device … Useful english dictionary
Nicol's prism — Prism Prism (pr[i^]z m), n. [L. prisma, Gr. pri sma, fr. pri zein, pri ein, to saw: cf. F. prisme.] 1. (Geom.) A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms. [1913 Webster] Note … The Collaborative International Dictionary of English
