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index of refraction

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.07 sec.
index of refraction
n.
The ratio of the speed of light in a vacuum to the speed of light in a medium under consideration. Also called refractive index.
index of refraction
n
(Physics / General Physics) another name for refractive index
index of refraction
A measure of the extent to which a substance slows down light waves passing through it. The index of refraction of a substance is equal to the ratio of the velocity of light in a vacuum to its speed in that substance. Its value determines the extent to which light is refracted when entering or leaving the substance.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.index of refraction - the ratio of the velocity of light in a vacuum to that in a medium
refractive index
ratio - the relative magnitudes of two quantities (usually expressed as a quotient)


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? Mentioned in ? References in periodicals archive
 
Neutron interferometric observation of the virtual excitation and multiple scattering correction terms to the index of refraction
Precision measurements with slow neutrons: April 5-7, 2004 by Journal of Research of the National Institute of Standards and Technology
By aiming a light beam into any substantial body of liquid ethane or methane, the SSP will attempt to record the index of refraction of the fluid, another indication of its density.
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Motter points out that as the difference in the index of refraction between the polymer layers increases, fewer layers are needed to attain the necessary level of reflectivity.
Novel decorative effects produced by multilayer sheet by Gabriele, Michael C. / Plastics Technology
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