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BiprismBiprism Bi"prism, n. [Pref. bi- + prism.]
1. A prism whose refracting angle is very nearly 180 degrees.
2. A combination of two short rectangular glass prisms
cemented together at their diagonal faces so as to form a
cube; -- called also optical cube. It is used in one
form of photometer. Diprismatic
Diprismatic Di`pris*mat"ic, a. [Prefix di- + prismatic.]
Doubly prismatic.
I prismaticaFlower-de-luce Flow"er-de-luce", n. [Corrupted fr.
fleur-de-lis.] (Bot.)
A genus of perennial herbs (Iris) with swordlike leaves and
large three-petaled flowers often of very gay colors, but
probably white in the plant first chosen for the royal French
emblem.
Note: There are nearly one hundred species, natives of the
north temperate zone. Some of the best known are Iris
Germanica, I. Florentina, I. Persica, I.
sambucina, and the American I. versicolor, I.
prismatica, etc. Macroprism
Macroprism Mac"ro*prism, n. [Macro- + prism.] (Crystallog.)
A prism of an orthorhombic crystal between the macropinacoid
and the unit prism; the corresponding pyramids are called
macropyramids.
Prism glass
Prism glass Prism glass
Glass with one side smooth and the other side formed into
sharp-edged ridges so as to reflect the light that passes
through, used at windows to throw the light into the
interior.
prism telescopeTeinoscope Tei"no*scope, n. [Gr. ? to extend + -scope.]
(Physics)
An instrument formed by combining prisms so as to correct the
chromatic aberration of the light while linear dimensions of
objects seen through the prisms are increased or diminished;
-- called also prism telescope. --Sir D. Brewster. PrismaticPrismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf.
F. prismatique.]
1. Resembling, or pertaining to, a prism; as, a prismatic
form or cleavage.
2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as Orthorhombic.
Prismatic borax (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
Prismatic colors (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See Primary colors, under Color.
Prismatic compass (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
Prismatic spectrum (Opt.), the spectrum produced by the
passage of light through a prism. Prismatic boraxPrismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf.
F. prismatique.]
1. Resembling, or pertaining to, a prism; as, a prismatic
form or cleavage.
2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as Orthorhombic.
Prismatic borax (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
Prismatic colors (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See Primary colors, under Color.
Prismatic compass (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
Prismatic spectrum (Opt.), the spectrum produced by the
passage of light through a prism. Prismatic cleavageCleavage Cleav"age, n.
1. The act of cleaving or splitting.
2. (Crystallog.) The quality possessed by many crystallized
substances of splitting readily in one or more definite
directions, in which the cohesive attraction is a minimum,
affording more or less smooth surfaces; the direction of
the dividing plane; a fragment obtained by cleaving, as of
a diamond. See Parting.
3. (Geol.) Division into lamin[ae], like slate, with the
lamination not necessarily parallel to the plane of
deposition; -- usually produced by pressure.
Basal cleavage, cleavage parallel to the base of a crystal,
or to the plane of the lateral axes.
Cell cleavage (Biol.), multiplication of cells by fission.
See Segmentation.
Cubic cleavage, cleavage parallel to the faces of a cube.
Diagonal cleavage, cleavage parallel to ta diagonal plane.
Egg clavage. (Biol.) See Segmentation.
Lateral cleavage, cleavage parallel to the lateral planes.
Octahedral, Dodecahedral, or Rhombohedral, cleavage,
cleavage parallel to the faces of an octahedron,
dodecahedron, or rhombohedron.
Prismatic cleavage, cleavage parallel to a vertical prism. Prismatic colorsPrismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf.
F. prismatique.]
1. Resembling, or pertaining to, a prism; as, a prismatic
form or cleavage.
2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as Orthorhombic.
Prismatic borax (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
Prismatic colors (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See Primary colors, under Color.
Prismatic compass (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
Prismatic spectrum (Opt.), the spectrum produced by the
passage of light through a prism. Prismatic compassPrismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf.
F. prismatique.]
1. Resembling, or pertaining to, a prism; as, a prismatic
form or cleavage.
2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as Orthorhombic.
Prismatic borax (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
Prismatic colors (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See Primary colors, under Color.
Prismatic compass (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
Prismatic spectrum (Opt.), the spectrum produced by the
passage of light through a prism. Prismatic spectrumSpectrum Spec"trum, n.; pl. Spectra. [L. See Specter.]
1. An apparition; a specter. [Obs.]
2. (Opt.)
(a) The several colored and other rays of which light is
composed, separated by the refraction of a prism or
other means, and observed or studied either as spread
out on a screen, by direct vision, by photography, or
otherwise. See Illust. of Light, and Spectroscope.
(b) A luminous appearance, or an image seen after the eye
has been exposed to an intense light or a strongly
illuminated object. When the object is colored, the
image appears of the complementary color, as a green
image seen after viewing a red wafer lying on white
paper. Called also ocular spectrum.
Absorption spectrum, the spectrum of light which has passed
through a medium capable of absorbing a portion of the
rays. It is characterized by dark spaces, bands, or lines.
Chemical spectrum, a spectrum of rays considered solely
with reference to their chemical effects, as in
photography. These, in the usual photogrophic methods,
have their maximum influence at and beyond the violet
rays, but are not limited to this region.
Chromatic spectrum, the visible colored rays of the solar
spectrum, exhibiting the seven principal colors in their
order, and covering the central and larger portion of the
space of the whole spectrum.
Continous spectrum, a spectrum not broken by bands or
lines, but having the colors shaded into each other
continously, as that from an incandescent solid or liquid,
or a gas under high pressure.
Diffraction spectrum, a spectrum produced by diffraction,
as by a grating.
Gaseous spectrum, the spectrum of an incandesoent gas or
vapor, under moderate, or especially under very low,
pressure. It is characterized by bright bands or lines.
Normal spectrum, a representation of a spectrum arranged
upon conventional plan adopted as standard, especially a
spectrum in which the colors are spaced proportionally to
their wave lengths, as when formed by a diffraction
grating.
Ocular spectrum. See Spectrum, 2
(b), above.
Prismatic spectrum, a spectrum produced by means of a
prism.
Solar spectrum, the spectrum of solar light, especially as
thrown upon a screen in a darkened room. It is
characterized by numerous dark lines called Fraunhofer
lines.
Spectrum analysis, chemical analysis effected by comparison
of the different relative positions and qualities of the
fixed lines of spectra produced by flames in which
different substances are burned or evaporated, each
substance having its own characteristic system of lines.
Thermal spectrum, a spectrum of rays considered solely with
reference to their heating effect, especially of those
rays which produce no luminous phenomena. Prismatic spectrumPrismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf.
F. prismatique.]
1. Resembling, or pertaining to, a prism; as, a prismatic
form or cleavage.
2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as Orthorhombic.
Prismatic borax (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
Prismatic colors (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See Primary colors, under Color.
Prismatic compass (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
Prismatic spectrum (Opt.), the spectrum produced by the
passage of light through a prism. PrismaticalPrismatic Pris*mat"ic, Prismatical Pris*mat"ic*al, a. [Cf.
F. prismatique.]
1. Resembling, or pertaining to, a prism; as, a prismatic
form or cleavage.
2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as Orthorhombic.
Prismatic borax (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
Prismatic colors (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See Primary colors, under Color.
Prismatic compass (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
Prismatic spectrum (Opt.), the spectrum produced by the
passage of light through a prism. Prismatically
Prismatically Pris*mat"ic*al*ly, adv.
In the form or manner of a prism; by means of a prism.
Prismatoidal
Prismatoidal Pris`ma*toid"al, a. [Gr. ?, ?, prism + -oid: F.
prismato["i]de.]
Having a prismlike form. --Ure.
Prismoid
Prismoid Pris"moid (pr[i^]z"moid), n. [Cf. F. prismto["i]de.]
A body that approaches to the form of a prism.
Prismoidal
Prismoidal Pris*moid"al, a.
Having the form of a prismoid; as, prismoidal solids.
Prismy
Prismy Pris"my, a.
Pertaining to a prism. [R.]
Refracting angle of a prismRefracting Re*fract"ing, a.
Serving or tending to refract; as, a refracting medium.
Refracting angle of a prism (Opt.), the angle of a
triangular prism included between the two sides through
which the refracted beam passes in the decomposition of
light.
Refracting telescope. (Opt.) See under Telescope.
Meaning of PRISM from wikipedia
-
PRISM is a code name for a
program under which the
United States National Security Agency (NSA)
collects internet communications from
various U.S. internet...
- Look up
prism, prismatic, or
prisms in Wiktionary, the free dictionary.
Prism usually refers to:
Prism (optics), a
transparent optical component with flat...
-
Prism is the
debut album by
Canadian rock band
Prism,
released in May 1977 on the
Canadian record label GRT. It was
produced primarily by
Bruce Fairbairn...
- 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...
- In geometry, a
triangular prism or
trigonal prism is a
prism with 2
triangular bases. If the
edges pair with each triangle's
vertex and if they are perpendicular...
- In
Prism is Polvo's
fifth studio album, and
their first since 1997's Shapes. It was
recorded by
Brian Paulson and was
released on
Merge Records on September...
- not
prisms. The most
familiar type of
optical prism is the
triangular prism,
which has a
triangular base and
rectangular sides. Not all
optical prisms are...
- geometry, the
octagonal prism is a
prism comprising eight rectangular sides joining two
regular octagon caps. The
octagonal prism can also be seen as a...
- care
professionals use
prism correction as a
component of some eyegl**** prescriptions. A lens
which includes some
amount of
prism correction will displace...
- In geometry, the
hexagonal prism is a
prism with
hexagonal base.
Prisms are polyhedrons; this
polyhedron has 8 faces, 18 edges, and 12 vertices. Since...
