1 shows the simple apparatus which carries the prism and on which the photograph is mounted.

I collected prisms, and tried, in scattering the rays, to learn the properties of each several pencil of light.

Let us sit here in the corridor and count the prisms in the chandeliers.

Erase the comma, and the words will describe the prism as a peculiar kind of solid; because whose will then be taken in the restrictive sense.

So, in her gown of rosy muslin, bouffant and billowy, a pink flower in her hair, and Celia's pink-and-white cameo at her whiter throat Ailsa Paige descended the carpeted stairs and came into the mellow dimness of the front parlour, where there was much rosewood, and a French carpet, and glinting prisms on the chandeliers,and a young man, standing, dark against a bar of sunshine in which golden motes swam.

The safety and convenience of handling the prisms is greatly increased by placing them in square brass boxes, each of which slides into place like a drawer.

The divergence may be varied and adjusted by inclining the prism to the line of sight.

[instruments to measure color] prism, spectroscope, spectrograph, spectrometer, colorimeter (optical instruments)

Now, by placing a rod as before in front of the patch, I have two colored stripes in a white field, and though the background remains of the same intensity of white, the intensities of the two stripes can be altered by moving the right angled prism through the spectrum.

The spectra have been produced by placing in front of the telescope a large prism, thus returning to the method originally employed by Fraunhofer in the first study of stellar spectra.

By preparing prisms of different varieties of tabasheer, Brewster proceeded to determine its refractive index, arriving at the remarkable result that tabasheer "has a lower index of refraction than any other known solid or liquid, and that it actually holds an intermediate place between water and gaseous bodies!"

In the manufacture of saltpetre, the earths, whether naturally or artificially impregnated, are mixed with the ashes from burnt wood, or salts of potash, so that this base may take the place of all others, and produce long prisms of potash saltpetre.

He thinks he's a battery of horse artillery now; that's the very latest development; and I shed tears and the chandeliers shed prisms every time he manoeuvres.

By sliding this prism in front of the spectrum I can deflect outward any portion of the spectrum I like, and by a mirror can reflect it through a second lens, forming a patch of light on the screen overlapping the patch of light formed by the undeflected rays.