dispersive power


dispersive power
noun
: the power of a transparent medium to separate different colors of light by refraction as measured by the difference in refractivity for two specified widely differing wavelengths divided by the refractivity at some specified intermediate wavelength

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Optics.
a measure of the ability of a substance to disperse light, equal to the quotient of the difference in refractive indices of the substance for two representative wavelengths divided by the difference of the refractive index for an intermediate wavelength and 1. Cf. Abbe number.

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dispersive power,
Physics. the power of a substance to separate light rays by diffraction. It is measured by the ratio of the dispersion of the red and blue wave lengths to the deviation of the yellow produced by a prism of small angle.

Useful english dictionary. 2012.

Look at other dictionaries:

  • Dispersive power — Dispersive Dis*pers ive, a. Tending to disperse. [1913 Webster] {Dispersive power} (Opt.), the relative effect of a material in separating the different rays of light by refraction, as when the substance is formed into a prism. {Dis*pers… …   The Collaborative International Dictionary of English

  • dispersive power — Optics. a measure of the ability of a substance to disperse light, equal to the quotient of the difference in refractive indices of the substance for two representative wavelengths divided by the difference of the refractive index for an… …   Universalium

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  • Dispersive — Dis*pers ive, a. Tending to disperse. [1913 Webster] {Dispersive power} (Opt.), the relative effect of a material in separating the different rays of light by refraction, as when the substance is formed into a prism. {Dis*pers ive*ness}, n. [1913 …   The Collaborative International Dictionary of English

  • dispersive — adjective Date: 1677 1. of or relating to dispersion < a dispersive medium > < the dispersive power of a lens > 2. tending to disperse • dispersively adverb • dispersiveness noun …   New Collegiate Dictionary

  • dispersive — dis·per·sive pər siv, ziv adj 1) of or relating to dispersion <a dispersive medium> <the dispersive power of a lens> 2) tending to disperse dis·per·sive·ness n * * * dis·per·sive (dis purґsiv) 1. tending to become dispersed. 2.… …   Medical dictionary

  • Dispersiveness — Dispersive Dis*pers ive, a. Tending to disperse. [1913 Webster] {Dispersive power} (Opt.), the relative effect of a material in separating the different rays of light by refraction, as when the substance is formed into a prism. {Dis*pers… …   The Collaborative International Dictionary of English

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  • optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

  • industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium


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