What is the definition of Optical angle? | Dictionary.net

OPTICAL ANGLE

\ˈɒptɪkə͡l ˈaŋɡə͡l], \ˈɒptɪkə‍l ˈaŋɡə‍l], \ˈɒ_p_t_ɪ_k_əl ˈa_ŋ_ɡ_əl]\

Definitions of OPTICAL ANGLE

1895 - Glossary of terms and phrases

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The Optical axis of a doubly refracting crystal is that direction along which a ray of light passes without undergoing bifurcation. See For O. angle, vide Visual angle ; for O. centre, vide Centre of a lens.

1895 - Glossary of terms and phrases
By Henry Percy Smith

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