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polariscope

Definitions

  • WordNet 3.6
    • n polariscope an optical device used to measure the rotation of the plane of vibration of polarized light
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Webster's Revised Unabridged Dictionary
    • n Polariscope (Opt) An instrument consisting essentially of a polarizer and an analyzer, used for polarizing light, and analyzing its properties.
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Century Dictionary and Cyclopedia
    • n polariscope An optical instrument, various forms of which have been contrived, for exhibiting the polarization of light, or for examining substances in polarized light. The essential parts of the instrument are the polarizing and analyzing plates or prisms, and these are formed either from natural crystals or of a series of reflecting surfaces, as of glass, artificially joined together. (See polarization.) A polariscope employing parallel light, and designed to find the extinction-directions—that is, planes of light-vibration—in a crystal section. is called a stauroscope. One using converging light, and employed in examining the interference figures, as of uniaxial and biaxial crystals, is sometimes called a conoscope. The tourmalin tongs, consisting of two transparent plates of tourmalin, cut parallel to the axis, and mounted in circular pieces of cork held in a kind of wire pincers, form the simplest kind of polariscope for viewing axial interference figures. The more complex and convenient forms have polarizing prisms of Iceland spar mounted in a vertical stand resembling that of a microscope, with a movable stage, coarse adjustment, and other arrangements. When the polariscope is essentially a microscope With Nicol prisms and attachments for viewing crystal-sections in polarized light, it is usually called a polarization-microscope or polarizing microscope. The saccharimeter and the polaristrobometer are special forms of polariscope designed to measure the angular rotation of the plane of polarization of an optically active substance, as a sugar solution, quartz, etc. See rotation, and rotatory power (under rotatory).
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Chambers's Twentieth Century Dictionary
    • Polariscope an instrument for polarising light, and analysing its properties
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Etymology

Webster's Revised Unabridged Dictionary
Polar, + -scope,
Chambers's Twentieth Century Dictionary
L. polarispolus, a pole.

Usage

In literature:

Sugar drainings and sugar sweepings shall be subject to duty either as molasses or sugar, as the case may be, according to polariscopic test.
"A Compilation of the Messages and Papers of the Presidents, Volume IX." by Benjamin Harrison
The polariscopic reading may now be taken, an observation on the 90 deg.
"Scientific American Supplement No. 822" by Various
On account of the predominance of invert sugars, pure honey has a levulo or left-handed rotation when examined by the polariscope.
"Human Foods and Their Nutritive Value" by Harry Snyder
Iceland spar is used chiefly in the optical instrument known as the polariscope.
"Wealth of the World's Waste Places and Oceania" by Jewett Castello Gilson
This is simpler than the polariscopic examination and better suited for ordinary use.
"Dietetics for Nurses" by Fairfax T. Proudfit
Tremblingly the young enthusiast adjusted his polariscope.
"Makers of Modern Medicine" by James J. Walsh
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