单词 | optical indicatrix |
释义 | > as lemmasoptical indicatrix 2. optical indicatrix: name given by L. Fletcher to a surface (sphere, spheroid, or ellipsoid) devised to indicate by its geometrical characters the optical characters of rays of light refracted through a crystal of any kind. ΘΚΠ the world > physical sensation > sight and vision > optical instruments > instruments to refract, etc., light > [noun] > optical indicatrix optical indicatrix1892 1892 L. Fletcher (title) The Optical Indicatrix and the Transmission of Light in Crystals. 1892 L. Fletcher 20 To the surface of reference the term Optical Indicatrix may be assigned..The Indicatrix is identical in form with the ellipsoid of elasticity of various authors, the ellipsoid of polarisation of Cauchy, the ellipsoid of indices of MacCullagh, and the index-ellipsoid of Liebisch. < as lemmas |
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