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: Prisms of different forms are often named from the figure of their bases; as, a triangular prism, a quadrangular prism, a rhombic prism, etc. [1913 Webster]

2. (Opt.) A transparent body, with usually three rectangular plane faces or sides, and two equal and parallel triangular ends or bases; -- used in experiments on refraction, dispersion, etc. [1913 Webster]

3. (Crystallog.) A form the planes of which are parallel to the vertical axis. See {Form}, n., 13. [1913 Webster]

{Achromatic prism} (Opt.), a prism composed usually of two prisms of different transparent substances which have unequal dispersive powers, as two different kinds of glass, especially flint glass and crown glass, the difference of dispersive power being compensated by giving them different refracting angles, so that, when placed together so as to have opposite relative positions, a ray of light passed through them is refracted or bent into a new position, but is free from color.

{Nicol's prism}, {Nicol prism}. [So called from Wm. Nicol, of Edinburgh, who first proposed it.] (Opt.) An instrument for experiments in polarization, consisting of a rhomb of Iceland spar, which has been bisected obliquely at a certain angle, and the two parts again joined with transparent cement, so that the ordinary image produced by double refraction is thrown out of the field by total reflection from the internal cemented surface, and the extraordinary, or polarized, image alone is transmitted. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • 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

  • 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: Prisms of… …   The Collaborative International Dictionary of English

  • Nicol , William — (1768–1852) British geologist and physicist Little is known about Nicol s early life except that he was born in Scotland. Primarily a geologist, he lectured in natural philosophy at the University of Edinburgh where James Clerk Maxwell was… …   Scientists

  • Nicol — is a given name and a surname, and may refer to: Nicol David, Malaysian squash player Nicol Williamson, Scottish actor Abioseh Nicol, Sierra Leonean diplomat Alex Nicol, American actor Andy Nicol, Scottish rugby player C. W. Nicol, Welsh writer… …   Wikipedia

  • Nicol Crags — (80°44′S 24°5′W / 80.733°S 24.083°W / 80.733; 24.083) is a rock crags rising to about 1,300 m to the south of Arkell Cirque in the Read Mountains, Shackleton Range. Photographed from the air by the U.S. Na …   Wikipedia

  • Prism (optics) — For other uses, see Prism (disambiguation). A plastic prism In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. The exact angles between the surfaces depend on the application. The traditional… …   Wikipedia

  • Nicol — Ni|col [engl.: nɪkəl], Nikol, das; s, s [engl. nicol (prism), nach dem brit. Physiker W. Nicol (um 1768 1851)] (Optik): aus einer Kombination zweier Prismen aus Kalkspat bestehende Vorrichtung zur Erzeugung u. zum Nachweis linear polarisierten… …   Universal-Lexikon

  • Nicol — Ni|col [ ni:kɔl] das; s, s <aus gleichbed. engl. nicol (prism), nach dem engl. Physiker W. Nicol, 1768 1851> aus zwei geeignet geschliffenen Teilprismen aus Kalkspat zusammengesetzter ↑Polarisator des Lichts; Polarisationsprisma (Optik) …   Das große Fremdwörterbuch

  • Achromatic 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

  • William Nicol — (1770 1851) was a Scottish physicist and geologist who invented the first device for obtaining plane polarized light the Nicol prism in 1828. He was born in 1770 in Humbie (East Lothian), not 1768 as previously thoughtFact|date=February… …   Wikipedia

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