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Gemmology

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Pregunta:

If there are two, moving shadow edges visible as pictured that do not touch, what sort of material is being tested on the refractometer?

Autor: Emma Begent-Cove

If there are two, moving shadow edges visible as pictured that do not touch, what sort of material is being tested on the refractometer?



Respuesta:

Anisotropic, biaxial


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