prisms

[prism]

In geometry, a prism is a three dimensional shape that has two bases that are parallel and the same size and shape. The prism's sides are all parallelograms. A classic pup tent is a triangular prism.

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A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms.

Noun
optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image

Noun
a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms

n.
A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms.

n.
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.

n.
A form the planes of which are parallel to the vertical axis. See Form, n., 13.

Prism

Prism , n. [L. prisma, Gr. , fr. , , 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. &hand; Prisms of different forms are often named from the figure of their bases; as, a triangular prism, a quadrangular prism, a rhombic prism, etc. 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. 3. (Crystallog.) A form the planes of which are parallel to the vertical axis. See Form, n., 13. 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.

A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms.

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Usage Examples

The great thing about celebrity culture is that they can't seem to stop themselves from displaying their ridiculous behaviour. I feel it's my job as a serious investigative journalist to witness all kinds of behaviour and then report back to the audience through the prism of my own anger and bitterness.

Misspelled Form

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