...A largerock in the form of a triangular prism, standing upright, with one endfirmly imbedded in the ground, was no doubt a "god" of some kind; ithas a slight hollow or "cup" pecked in the flat top... 
Gerard Fowke 「Archeological Investigations」
...Fromthis projector goes out a beam of invisible light and the reflectionsare gathered and thrown through a prism of the eye-piece...
Various 「Astounding Stories of Super-Science, October, 1930」
...Observing the so-called "blue bow" of at the limit oftotal reflection in a prism, he was led to the discovery of itscomplement, the "red bow" by refraction...
Edward Singleton Holden 「Sir William Herschel: His Life and Works」
...The course of a beam of light in passing through sucha prism is shown in ...
George C. Comstock 「A Text-Book of Astronomy」
...Hence the rays travelled in straight lines from the prism, and thespreading out was due to something that occurred within its substance...
Oliver Lodge 「Pioneers of Science」
...The prism actslike a sieve sorting out the different kinds of light...
Oliver Lodge 「Pioneers of Science」
...A spectrum is a collection of the colors which are dispersed bya prism from any given light...
Henry Warren 「Recreations in Astronomy」
...A 60degree heavy flint glass prism of best optical quality is included...
Wm. Gaertner & Co. 「Astronomical Instruments and Accessories」
...Frank McClean’s24-inch refractor, with an object-glass prism for spectroscopic work...
George Forbes 「History of Astronomy」
...The Spectroscope, an instrument devised for the examination of spectra,is, in its simplest form, composed of a small tube with a narrow slitand prism at one end, and an eye-piece at the other...
Cecil G. Dolmage 「Astronomy of To-day」
...We have in the prism the means of decomposing the light from the sun, orthe light from any other source, into its component parts...
Robert Stawell Ball 「The Story of the Heavens」
...We may now examine with the prism the colours of thesun and the colours of the stars, and from this examination we can learnsomething of the materials which enter into their composition...
Robert Stawell Ball 「The Story of the Heavens」
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