index of refraction

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index of refraction

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

(General Physics) another name for refractive index

in′dex of refrac′tion

a number indicating the speed of light in a given medium, usu. as the ratio of the speed of light in a vacuum or in air to that in the given medium.

in·dex of refraction

The ratio of the speed of light in a vacuum to the speed of light in another medium, such as water or oil.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.index of refraction - the ratio of the velocity of light in a vacuum to that in a medium
ratio - the relative magnitudes of two quantities (usually expressed as a quotient)
References in periodicals archive ?
The difference in the index of refraction between the PMMA (1.
Hence, microscopes with non-monochromatic light sources and with non-perfect optical properties, such as lenses made from glasses in which index of refraction is a function of wavelength, will have a value of R greater than that predicted by equation (7).
This can be viewed as a flowing index of refraction emerging in the absence of a refractive medium.
Finally, there is an optimum particle size for scattering to occur that is dependent on the index of refraction of the substance and the medium, and the wavelength of light.
The imaginary part of the index of refraction (below 300 nm) was assumed to possess a shape given by the function in Eq.
One can observe that the numerical framework we applied demonstrates the large influence of the relative index of refraction in the nature of the electromagnetic couplings between the heterogeneities.
They then cascaded the negative index medium with a positive refractive index medium so that the complete nanostructure behaved as one with an index of refraction of zero.
The 2x3 optical moderator is simulated in four windows display which is the optical field window, effective index of refraction, Cut View and also output power.
lt;p>At the heart of optical networking is optical fiber, which consists of a narrow thread of glass--actually pure silicon dioxide--that's been clad with another glass that has a different index of refraction.
All known materials have index of refraction which is more than one however in 1968 Veselago [1] found that it is possible to make a material that has index of refraction less than one, even negative.
Future applications in optical circuit elements and the boosting output power of LEDs are described, and the chapter on the optical properties of ZnO discusses methods for measuring the index of refraction, among other issues.
Applied physics researchers at the California Institute of Technology, Pasadena, have constructed a nanofabricated photonic material which creates a negative index of refraction in the blue-green region of the visible spectrum.

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