Definition of extraordinary ray in English:

extraordinary ray

Syllabification: ex·traor·di·nar·y ray

noun

Optics
  • (In double refraction) the light ray that does not obey the ordinary laws of refraction. Compare with ordinary ray.
    More example sentences
    • The crystals are also idealized by assuming that no incident photon is absorbed, but each emerges in either the ordinary or the extraordinary ray.
    • He cited as an example Huygens's hypothesis that the extraordinary ray in doubly-refracting Iceland spar is propagated elliptically.
    • Thus, a straightforward new technique is demonstrated for determining the extraordinary-ray absorption coefficient.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody