Birefringence

Optical Properties

Definition

The difference between a gemstone's highest and lowest refractive indices, observed in anisotropic (non-cubic) crystals where light is split into two rays traveling at different speeds.

Detailed Explanation

宝石最高折射率与最低折射率之差，在各向异性（非立方）晶体中可观察到，光线分裂为两束以不同速度传播。

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