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 ?
This experiment uses water as the medium through which the light propagates so that the "incomplete cancellation of the geometrical effects" (according to Cahill) would be greatly amplified by the much larger index of refraction.
We give a global uniqueness on the index of refraction in simple domain by stating the following result.
The difference in the index of refraction between the PMMA (1.
2] pigments are dispersed in an effective homogeneous medium composed of the mixture of the polymeric resin and the HPP, the index of refraction of the mixture is assumed to be lower than that of the sole polymeric phase because of the presence of the air voids (which have a refractive index of 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).
The novel and often counter-intuitive properties of the LHM, including the inverse Doppler effect, radiation tension instead of pressure and negative index of refraction (negative phase velocity) etc.
Scattering occurs when the incident light beam contacts particles or regions within the polymer system that have an index of refraction which is different from that of the base polymer.
A fiber Bragg grating, in its simplest form, is a length of fiber whose index of refraction is periodic in the direction of light propagation.
This latter analysis yielded an estimate of the imaginary part of the index of refraction.
The reflectance of the luminaire was set to 90 percent and the index of refraction of the prism was set to 1.
Numerical simulations were performed as a function of the filling fraction and the relative index of refraction, nY defined as the ratio between the index of refraction of the scatterers and the surrounding media noted n and n0.
We assume waveguides free from losses, small variations of the index of refraction and propagation along the z axis of the form exp[j([omega]t - [beta]z)].

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