In optics, the refractive index (or refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability...

Refractive index contrast, in an optical waveguide, such as an optical fiber, is a measure of the relative difference in refractive index of the core...

Negative-index metamaterial or negative-index material (NIM) is a metamaterial whose refractive index for an electromagnetic wave has a negative value...

{n_{2}}{n_{1}}}} Optical prisms and lenses use refraction to redirect light, as does the human eye. The refractive index of materials varies with the wavelength...

tracing to compute the angles of incidence or refraction, and in experimental optics to find the refractive index of a material. The law is also satisfied...

well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion. Standard refractive index measurements...

Gradient-index (GRIN) optics is the branch of optics covering optical effects produced by a gradient of the refractive index of a material. Such gradual...

A graded-index fiber, or gradient-index fiber, is an optical fiber whose core has a refractive index that decreases continuously with increasing radial...

in particular its refractive index and the extent to which it rotates the plane of linearly polarized light. The refractive index, nD, for sucrose solutions...

A refractive index profile is the distribution of refractive indices of materials within an optical fiber. Some optical fiber has a step-index profile...

step-index profile is a refractive index profile characterized by a uniform refractive index within the core and a sharp decrease in refractive index at...

is refracted in the same direction as the curvature of Earth's surface. The refractive index of air depends on temperature, giving rise to refraction effects...

The refractive index of water at 20 °C for visible light is 1.33. The refractive index of normal ice is 1.31 (from List of refractive indices). In general...

A high-refractive-index polymer (HRIP) is a polymer that has a refractive index greater than 1.50. Such materials are required for anti-reflective coating...

Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These...

represents the refractive indices and associated polarizations of light, as functions of the orientation of the wavefront, in a doubly-refractive crystal (provided...

be assigned a negative refractive index. Such materials are sometimes called "double negative" materials. Negative refraction occurs at interfaces between...

Standard refractometers measure the extent of light refraction (as part of a refractive index) of transparent substances in either a liquid this is...

Experimental data for the real (refractive index) and imaginary (absorption index) parts of the complex refractive index of fused quartz reported in the...

Lüneburg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer...

Refraction is generally accompanied by partial reflection. When waves are refracted from a medium of lower propagation speed (higher refractive index)...

a material is called the refractive index n of the material (n = c/v). For example, for visible light, the refractive index of glass is typically around...

Descartes' law. The refractive index is a wavelength-dependent quantity, creating chromatic aberrations in a system by refracting rays more or less according...

which become optically inaccessible. Matching the refractive index minimises reflection, refraction, diffraction and rotations that occurs at the interfaces...

interface between a medium with refractive index n1 and a second medium with refractive index n2, both reflection and refraction of the light may occur. The...

The Sellmeier equation is an empirical relationship between refractive index and wavelength for a particular transparent medium. The equation is used to...

diffraction of light as it propagates. optical path=refractive index x In a medium of constant refractive index, n, the OPL for a path of geometrical length...

traveling between media of different refractive indices may both reflect and refract at the interface. The refractive index will typically alternate over a...

transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in...

The refractive index of a medium is calculated by dividing the speed of light in a vacuum by the speed of light in that medium. The refractive index of...