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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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英文字典中文字典相关资料:


  • PRISM Portal Access - Medicaid: Utah Department of Health and Human . . .
    To access PRISM Portal click here Starting April 1, 2021, providers will need to go through a multi-factor authentication process to access the PRISM application Please visit the links below for additional information:
  • 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 - Medicaid: Utah Department of Health and Human Services . . .
    In April 2023, Utah Medicaid replaced the Utah Medicaid Management Information System (MMIS) with a new system called Provider Reimbursement Information System for Medicaid (PRISM) The Provider Enrollment component of PRISM was implemented in 2016 and updated in June 2020
  • Prism Launcher - Home
    Install and launch modpacks easily, while keeping them clean You no longer need to manually install and update modpacks—Prism Launcher can do these tasks for you without the hassle
  • PRISM Live Studio
    With PRISM Live Studio, you can go live in mere seconds Stream on popular social platforms and grow your subscribers
  • 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, Equations, Surface Area, Volume - Science Facts
    Definition: What is a Prism? A prism is a transparent 3-dimensional object made of glass and surrounded by intersecting planes, some of which are identical to one another The most critical parameters of a prism are the angle and material that determines its purpose
  • Prism Free Trial - GraphPad
    Sign up to start your free 30 day trial! No credit card, no commitment required By clicking "Get Started" I agree to GraphPad's Terms and Conditions and Privacy Policy © 2025 GraphPad Software All rights reserved
  • PRISM | definition in the Cambridge English Dictionary
    Newton split white light into its spectrum of colors by beaming it through a prism This vision consists of luminous, bright, flickering colors of the spectrum, like a prism catching light It features four retired people who look back on their lives through the prism of their dancing
  • Prism Shape - BYJUS
    Prism is a three-dimensional solid object in which the two ends are identical It is the combination of the flat faces, identical bases and equal cross-sections The faces of the prism are parallelograms or rectangles without the bases And the bases of the prism could be triangle, square, rectangle or any n-sided polygon





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