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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 Group at Oregon State University
    The PRISM Group gathers weather observations from a wide range of monitoring networks, applies sophisticated quality control measures and mapping methods, and develops spatial datasets to reveal short- and long-term weather patterns
  • Prism - GraphPad
    Prism is specifically formatted for the analyses you want to run, including analysis of quantitative and categorical data This makes it easier to enter data correctly, choose suitable analyses, and create stunning graphs
  • 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
  • PRISM Definition Meaning - Merriam-Webster
    The meaning of PRISM is a polyhedron with two polygonal faces lying in parallel planes and with the other faces parallelograms
  • What is Prism? Meaning, Definition, Shape, Types, Area, Examples
    A prism is a solid shape that is bounded by flat faces such that top and bottom faces are identical Learn the definition, elements, cross setions, examples, more
  • 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
  • Prisms with Examples - Math is Fun
    Go to Surface Area or Volume A prism is a solid object with: identical ends flat faces and the same cross section all along its length !
  • Home - GraphPad
    Prism offers countless ways to customize your graphs, from color schemes to how you organize data Export into almost any format, send to PowerPoint, or email directly from the application
  • Prism Healthcare - Medical Equipment, Supplies, and Services
    Prism Healthcare Services is a full-service respiratory and home medical equipment provider for patients can caregivers in the Chicago, IL area
  • Prism - Math. net
    A prism is a space figure with two parallel bases that are polygons of the same size and shape All other faces of a prism are rectangles, squares, or parallelograms





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