Definition of ordinary ray in English:

ordinary ray

Line breaks: or¦din|ary ray

noun

Optics
  • (In double refraction) the ray that obeys the ordinary laws of refraction.
    More example sentences
    • One of the waves, the ordinary ray, travels straight through, with its image remaining stationary when the crystal is turned.

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Word of the day grotesquerie
Pronunciation: grəʊˈtɛskəri
noun
grotesque quality or grotesque things collectively