bisectrix of angle

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• Bisectrix — Bi*sec trix, n. The line bisecting the angle between the optic axes of a biaxial crystal. [1913 Webster] …   The Collaborative International Dictionary of English

• bisectrix — [bī sek′triks΄] n. pl. bisectrices [bī΄sek trī′sēz΄] Crystallography a bisector, esp. one that bisects an angle formed by the intersection of two axes of a crystal …   English World dictionary

• bisectrix — /buy sek triks/, n., pl. bisectrices /buy sek truy seez/. 1. Crystall. an imaginary line bisecting either the acute angle (acute bisectrix) or the obtuse angle (obtuse bisectrix) of the optic axes of a biaxial crystal. 2. Geom. a bisector. [1850… …   Universalium

• Angle of refraction — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

• bisectrix — n. bisector, line that bisects an angle (Geometry) …   English contemporary dictionary

• acute bisectrix — noun : the bisectrix of the acute angle formed by the axes of a biaxial crystal * * * Crystall. See under bisectrix (def. 1) …   Useful english dictionary

• obtuse bisectrix — noun : the bisectrix of the obtuse angle formed by the axes of a biaxial crystal called also second mean line * * * Crystall. See under bisectrix (def. 1). [1895 1900] …   Useful english dictionary

• Optical mineralogy — A petrographic microscope, which is an optical microscope fitted with cross polarizing lenses, a conoscopic lens, and compensators (plates of anisotropic materials; gypsum plates and quartz wedges are common), for crystallographic analysis.… …   Wikipedia

• Conical refraction — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

• declination — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

• Differential refraction — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English