birefringent crystal

birefringent crystal

A crystal which, by light microscopy, is anisotropic with respect to the velocity of light.
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As a birefringent crystal, the refractive index of the wurtzite structural ZnO depends on the polarization.
Magnesium borates are considerable borate minerals by virtue of their high heat resistance, light weight, high elasticity coefficient, birefringent crystal structure, anticorrosion, and antiwear properties [1-4].
Scholars have built reasonable cases that the sunstone was either a ball of beryl used as a burning-glass, an alternative early name for lodestone, or a birefringent crystal used to measure the sky's polarization.
Microscopic evaluation of the material removed from the ventriculus showed birefringent crystals that corresponded to microscopic silica grains, consistent with the decomposed granite from the exhibit.
Characteristic birefringent crystals in a 'shock-of-wheat' arrangement are observed on urine microscopy.
Cardiac, cerebellar, and hepatic small caliber blood vessels were expanded by birefringent crystals.
(5) Synovial fluid analysis can be used to identify weakly positively birefringent crystals using polarized light microscopy.
The nonaqueous alcoholic eosin staining method was used to detect birefringent crystals [35].
Tuberous xanthoma are large plaque like lesions of the subcutis usually located on the buttocks, elbows, knees and fingers and seen with type IIa or III hyperlipoproteinemia.It contains large amounts of cholesterol and its esters, which may be demonstrated under polarized light in fresh tissue as birefringent crystals.
The family of larger aperture optics consists of two different birefringent crystals - crystalline quartz and magnesium fluoride (MgF2) - each with a highly efficient broadband antireflection coating, in an air-spaced design.
In this retrospective study, we evaluated the MMPS as a means of identifying MCC and separating it from other birefringent crystals that are occasionally found in lung tissue specimens.