Refractometer

Gem Identification

Definition

A gemological instrument that measures a polished gemstone's refractive index by determining the critical angle at which total internal reflection occurs between the stone and the instrument's reference glass.

Detailed Explanation

通过测定宝石与仪器参考玻璃之间发生全内反射的临界角来测量抛光宝石折射率的宝石学仪器。

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