dichroscope

British  

/ ˈdaɪkrəˌskəʊp, ˌdaɪkrəˈskɒpɪk /

noun

1. Also called: dichroiscope.   dichrooscope.  an instrument for investigating the dichroism of solutions or crystals

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Other Word Forms

• dichroscopic adjective

Etymology

Origin of dichroscope

C19: from Greek dikhroos two-coloured + _-scope

Example Sentences

The student should, if possible, obtain the use of a dichroscope and practice with it on all sorts of stones.

From A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public by Wade, Frank Bertram

The emerald is dichroic, giving in the dichroscope a bluish-green and a yellowish-green image.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various

A dichroscope may be had for from seven to ten dollars, according to the make, and everyone who deals in colored stones should own and use one.

From A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public by Wade, Frank Bertram

In order to see the axial colours separately the crystal must be examined with a dichroscope, or in a polarizing microscope from which the analyser has been removed.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

In the dichroscope the ruby shows two images, one square of a violet red, the second square being a truer and a paler red.

From The Chemistry, Properties and Tests of Precious Stones by Mastin, John