Definition of Index of refraction

1. Noun. The ratio of the velocity of light in a vacuum to that in a medium.

Exact synonyms: Refractive Index
Generic synonyms: Ratio



Medical Definition of Index of refraction

1. For a given wavelength, this is the ratio of the velocity of light in vacuum (c) to the velocity of light in a refractive material (for example, glass, plasma, etc.). (09 Oct 1997)

Index Of Refraction Pictures

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Lexicographical Neighbors of Index Of Refraction

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index of refraction (current term)
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Literary usage of Index of refraction

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Treatise on Electricity and Magnetism by James Clerk Maxwell (1892)
"But the value of the index of refraction is different for light of different ... We must therefore select the index of refraction which corresponds to waves ..."

2. Proceedings of the Royal Society of London by Royal Society (Great Britain) (1898)
"On the Determination of the Indices of Refraction of various Substances for the Electric Ray. II. Index of Refraction of Glass ..."

3. Encyclopaedia Britannica: A Standard Work of Reference in Art, Literature (1907)
"... the relative velocity of the ether within the prism would be to that of the «ether outside inversely as the square of the index of refraction, ..."

4. A Treatise on Light by Robert Alexander Houstoun (1915)
"leasure the index of refraction of the glass the slit is illumi- rith sodium light and the rays allowed to fall on the face AC in •ection FP, so that after ..."

5. Readers' Guide to Periodical Literature by Anna Lorraine Guthrie, Marion A. Knight, H.W. Wilson Company, Estella E. Painter (1920)
"Refractive index Application of the plane grating to the determination of the index of refraction of a Kas, with values for air from X 2500 to X 6500. ..."

6. The Microscope: An Introduction to Microscopic Methods and to Histology by Simon Henry Gage (1903)
"index of refraction. Worked out completely in Fig. 54, ABN^ the index of ... Absolute Index of Refraction.—This is the index of refraction obtained when the ..."

7. Manual of Petrographic Methods by Albert Johannsen (1918)
"It was first published by Descartes, Snell having died in 1626 without having made the statement in print. 38. Index of Refraction. ..."

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