extraordinary ray

noun

: the part of a ray divided in two by double refraction that does not follow the ordinary laws of refraction because its speed varies with its direction in the doubly refracting medium

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Cite this Entry

“Extraordinary ray.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extraordinary%20ray. Accessed 19 Jul. 2024.

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