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positive crystal

noun

Definitions

  1. A doubly refracting crystal in which the index of refraction for the extraordinary ray is…

    A doubly refracting crystal in which the index of refraction for the extraordinary ray is greater than for the ordinary ray, and the former is refracted nearer to the axis than the latter, such as quartz and ice; as opposed to negative crystal: one in which this characteristic is reversed, such as Iceland spar or tourmaline.

The neighborhood

Vish — recursive loop

No curated loop yet for positive crystal. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA