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prism    音标拼音: [pr'ɪzəm]
n. 棱镜,棱柱

棱镜,棱柱

prism
n 1: a polyhedron with two congruent and parallel faces (the
bases) and whose lateral faces are parallelograms
2: optical device having a triangular shape and made of glass or
quartz; used to deviate a beam or invert an image [synonym:
{prism}, {optical 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] Prismatic

27 Moby Thesaurus words for "prism":
achromatic lens, astigmatic lens, burning glass, camera,
coated lens, concave lens, concavo-convex lens, condenser,
convex lens, eyeglass, eyepiece, glass, hand lens, lens, magnifier,
magnifying glass, meniscus, object glass, objective,
objective prism, ocular, reader, reading glass, telephoto lens,
toric lens, varifocal lens, zoom lens



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  • Prism - GraphPad
    The preferred analysis and graphing solution purpose-built for scientific research Join the world’s leading scientists and discover how you can use Prism to save time, make more appropriate analysis choices, and elegantly graph and present your scientific research
  • Prism (geometry) - Wikipedia
    In geometry, a prism is a polyhedron comprising an n-sided polygon base, a second base which is a translated copy (rigidly moved without rotation) of the first, and n other faces, necessarily all parallelograms, joining corresponding sides of the two bases All cross-sections parallel to the bases are translations of the bases
  • What is Prism? Meaning, Definition, Shape, Types, Area, Examples
    A prism is a solid shape that is bound on all its sides by plane faces There are two types of faces in a prism The top and bottom faces are identical and are called bases A prism is named after the shape of these bases For example, if a prism has a triangular base it is called a triangular prism
  • Prism - Definition, Shape, Types, Formulas, Examples Diagrams
    A prism is a member of the polyhedron family consisting of two identical and parallel polygonal bases The bases are connected by flat faces forming a uniform cross-section In general, a prism refers to a transparent solid used to refract or scatter a beam of white light
  • Prisms with Examples - Math is Fun
    A prism is a solid object with: and the same cross section all along its length ! A cross section is the shape made by cutting straight across an object The cross section of this object is a triangle it has the same cross section all along its length so it's a triangular prism
  • Prism PSG - Top Engineering Consulting Firm
    Specializing in engineering, system integration, power quality, and more, Prism PSG is ready to solve your next challenge Contact us today for a consultation Give us a call!
  • Prism | Definition, Refraction, Types, Facts | Britannica
    prism, in optics, a piece of glass or other transparent material cut with precise angles and plane faces, useful for analyzing and reflecting light An ordinary triangular prism can separate white light into its constituent colours, called a spectrum
  • Prisms- Definition, Types, Formulas, Solved Examples - Cuemath
    A prism is an important member of the polyhedron family that has congruent polygons at the base and top The other faces of a prism are called lateral faces It means that a prism does not have a curved face A prism has the same cross-section all along its length The prisms are named depending upon their cross-sections
  • PRISM | definition in the Cambridge English Dictionary
    PRISM meaning: 1 a solid shape with flat sides and two ends that are the same shape : 2 a transparent glass or… Learn more
  • Build with Confidence - Prism Masonry in Phoenix, Arizona
    Prism Masonry in Phoenix, AZ, offers trusted, reliable masonry services across the Valley Let’s partner on your next project—connect with us today!





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