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Prism   /prˈɪzəm/   Listen
Prism

noun
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: optical prism.



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"Prism" Quotes from Famous Books



... beam of light can be noticed by exposing it to a prism. If, in a dark room, a beam of light be admitted through a small hole in a shutter, it will form a white round spot upon the place where it falls. If a triangular prism of glass be placed on the inside of the dark room, so that the beam of light falls upon it, it no longer has the ...
— American Handbook of the Daguerrotype • Samuel D. Humphrey

... Rev. Canon Chasuble, D.D. Merriman, Butler Lane, Manservant Lady Bracknell Hon. Gwendolen Fairfax Cecily Cardew Miss Prism, Governess ...
— The Importance of Being Earnest - A Trivial Comedy for Serious People • Oscar Wilde

... my pillow looking forth, by light Of moon or favouring stars I could behold The antechapel, where the statue stood Of Newton with his prism and silent face. The marble index of a mind for ever Voyaging through strange ...
— Wordsworth • F. W. H. Myers

... cheerily on the shingles of the roof—and oh, how passing sweet is the lullaby from the humming of numberless glancing bright—hued flies, of all sorts and sizes, sparkling among the green leaves like chips of a prism, and the fitful whirring of the fairy—flitting humming bird, now here, now there, like winged gems, or living atoms of the rainbow, round which their tiny wings, moving too quickly to be visible, form little ...
— Tom Cringle's Log • Michael Scott

... to be corpuscular, or consisting of transmitted particles. It is now known to be the result of undulations in ether. Reference has been made to the minuteness of these undulations. Their velocity is equally wonderful. Put a prism of glass into a ray of light coming into a dark room, and it is [Page 25] instantly turned out of its course, some parts more and some less, according to the number of vibrations, and appears as the seven colors on different parts of the screen. Fig. 6 shows the arrangement of colors, ...
— Recreations in Astronomy - With Directions for Practical Experiments and Telescopic Work • Henry Warren


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