trichroic


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tri·chro·ism

 (trī′krō-ĭz′əm)
n.
The property possessed by certain minerals of exhibiting three different colors when viewed from three different directions under white lights.

[From Greek trikhroos, three-colored : tri-, tri- + khrōs, color.]

tri·chro′ic adj.
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References in periodicals archive ?
Tanzanite is described as a trichroic crystal, radiating three different colours from three different crystal axes.
In any case, though freshly exposed crystals are usually brown, some of the first crystals picked up off the ground at Merelani were a beautiful, trichroic blue/purple/salmon.
Specific topics include measurements of the chemical and physical characteristics of polymers, depth profiling of polymers, measurement of the thermal and solar properties of polymers, polymer optical and dielectric properties, infrared linear dichroism of polymers, trichroic infrared measurements of orientation, dynamic infrared linear dichroism of polymers, analysis of rubber composites, and theory and applications of vibrational spectroscopy of conducting polymers.