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Earth and Space Sciences · 术语表

什么是 Pleochroism?

Definition 8.4 University Earth and Space Sciences — Year 1 · 第 8 章 — Optical Mineralogy

A mineral is pleochroic when its colour, seen in plane-polarised light, changes as the stage is rotated; the pleochroism is this change. It arises because the absorption of light depends on its vibration direction in the crystal.

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