refractive index

Definitions

  • WordNet 3.6
    • n refractive index the ratio of the velocity of light in a vacuum to that in a medium
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Webster's Revised Unabridged Dictionary
    • Refractive index (Opt) See Index of refraction, under Index.
    • Refractive index (Opt) the number which expresses the ratio of the sine of the angle of incidence to the sine of the angle of refraction. Thus the index of refraction for sulphur is 2, because, when light passes out of air into sulphur, the sine of the angle of incidence is double the sine of the angle of refraction.
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Usage

In literature:

The index of refraction of ebonite was found by Profs.
"Scientific American Supplement, No. 288" by Various
It must evidently diminish as the refractive index increases.
"Six Lectures on Light" by John Tyndall
If balsam of copaiba is made use of, the index of refraction of which is 1.50, a symmetrical field of about 24 deg.
"Scientific American Supplement, No. 441, June 14, 1884." by Various
C., 1.045-1.06; optically inactive; refractive index at 20 deg.
"The Handbook of Soap Manufacture" by W. H. Simmons
This is to be done by using a film of oil of the same refractive index as the glass.
"On Laboratory Arts" by Richard Threlfall
The refractive index of gypsum is 1.54, but heat none, being opaque.
"The Chemistry, Properties and Tests of Precious Stones" by John Mastin
But when a transparent solid is immersed in a liquid of the same refractive index as itself, it immediately disappears.
"Fragments of science, V. 1-2" by John Tyndall
The mineral has a high refractive index, and strong bi-refringence.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4" by Various
This corresponds to an index of refraction of 1.69.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2" by Various
The eye sees what is presented but the inversions and other peculiar effects are due to variations in the refractive index of the atmosphere.
"Visual Illusions" by Matthew Luckiesh
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In news:

Refractive index measurements perk up petrol profits.
Refractive Index vs Refraction of Light.
Refractive Index vs Optical Rotation.
Refractive index measurements perk up petrol profits.
Nearly identical to the natural lens of the human eye, the technology behind the artificial lens is called "GRIN" or gradient refractive index optics.
Revision of D7419 - 07 Standard Test Method for Determination of Total Aromatics and Total Saturates in Lube Basestocks by High Performance Liquid Chromatography (HPLC) with Refractive Index Detection.
US 6,528,142 B2 Yazaki Corporation has received a patent for an anti-reflective coating comprising a transparent substrate layer has a refractive index Ns.
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In science:

The same behavior happens for the square of the refraction index n2 , for the phase velocity Vph (t), and for the group velocity Vgr (t), as it is shown in panels (b), (c), and (d) of Fig. 2, respectively.
Light propagation with non-minimal couplings in a two-component cosmic dark fluid with an Archimedean-type force and unlighted cosmological epochs
For the parameters that guide the properties of light propagation we see from Fig. 2 that ˙H (t) asymptotically vanishes, see panel (a), and the refraction index, the phase velocity and the group velocity tend quasiperiodically asymptotically to one, see panel (b), (c), and (d), respectively.
Light propagation with non-minimal couplings in a two-component cosmic dark fluid with an Archimedean-type force and unlighted cosmological epochs
Panel (b): The plot of the square of the refraction index n2 (τ ) is presented in the panel (b) for the parameter Q = 0.7.
Light propagation with non-minimal couplings in a two-component cosmic dark fluid with an Archimedean-type force and unlighted cosmological epochs
It contains at least three eras, in which the refraction index exceeds one, three eras with n < 1, and n2 (τ ) tends asymptotically to one at t → ∞.
Light propagation with non-minimal couplings in a two-component cosmic dark fluid with an Archimedean-type force and unlighted cosmological epochs
At the end of this unlighted epoch the refraction index takes zero value, and starting from this point electromagnetic waves can propagate and transfer information into the universe.
Light propagation with non-minimal couplings in a two-component cosmic dark fluid with an Archimedean-type force and unlighted cosmological epochs
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