isotropic crystal

crystal, isotropic 

A crystal which has the same optical properties in all directions.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
These experimental data of surface energies include uncertainties of unknown magnitudes and correspond to an isotropic crystal. Hence, they do not yield information about the surface energy of a particular surface facet.
In the consideration of micro thermal behavior the XRD is one of the suitable method for studied of isotropic crystal and for un-isotropic based on mineral d-spacing and intensity could study changing atomic structural of kaolinite crystal.
Do not under any circumstances consider purchasing an isotropic crystal with a refractive index of any other than 2.417.
For isotropic crystals, exact solutions are well known for [theta] < [pi]/2 [6, 7] and [theta] = [pi]/2 [8, 9].
Should you wish to smuggle these isotropic crystals around the world, this microscope pen will allow you to tell the difference between diamonds and the pieces of pretty glass which trick many a damsel into a rogue's embrace.