refractive index

Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.

Related to refractive index: Total internal reflection, refractometer

refractive index

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

refractive index

(General Physics) physics a measure of the extent to which radiation is refracted on passing through the interface between two media. It is the ratio of the sine of the angle of incidence to the sine of the angle of refraction, which can be shown to be equal to the ratio of the phase speed in the first medium to that in the second. In the case of electromagnetic radiation, esp light, it is usual to give values of the absolute refractive index of a medium, that is for radiation entering the medium from free space. Symbol: ν or μ

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.

[1820–30]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Switch to new thesaurus

Noun

refractive index - the ratio of the velocity of light in a vacuum to that in a medium

index of refraction

ratio - the relative magnitudes of two quantities (usually expressed as a quotient)

Translations

Brechungsindex

indice di rifrazione

refractive index

n → Brechzahl f, → Brechungsindex m

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

References in periodicals archive ?

The effects of depositing a thin, highly refractive index (RI) layer onto the cladding over the grating region have been reported [8, 9].

High Sensitivity Refractive Index Sensor by D-Shaped Fibers and Titanium Dioxide Nanofilm

Hence, to keep the size compact and to enhance the received power in WPT, we have introduced a gradient refractive index structure at the aperture of the horn antenna.

Energy Transfer Using Gradient Index Metamaterial

If such a framework of evaluation is developed for the optical characteristics of transparent soil, it shall provide guidance for modeling experiments of transparent soil to reduce limitations on geometry and refractive index matching.

Quantification of the Transparency of the Transparent Soil in Geotechnical Modeling

To our knowledge, this is the first article that demonstrates precise control of the refractive index by using ABAtype polyimide-silica hybrid polymers.

Photoelectric Properties of ABA-Type Triblock Copolymers Designed Using Fluorine-Containing Polyimide Macroinitiators with Polyhedral Oligomeric Silsesquioxane

the radius of the rod is 0.1[micro]m and the refractive index Of silicon rod is 3.4i.e the dielectric constant is 11.976.

Design of pressure sensor using 2D photonic crystal

in 2008 [11] were the first to investigate the sol-gel coated FBG for refractive index sensors.

Fabrication of Fiber Bragg Grating Coating with Ti[O.sub.2] Nanostructured Metal Oxide for Refractive Index Sensor

We also analyze the performance of the manufactured gratings as sensors of temperature and refractive index.

Ultrashort Long-Period Fiber Grating Sensors Inscribed on a Single Mode Fiber Using C[O.sub.2] Laser Radiation

There are published tables for the refractive index of many liquids.

Distinguishing particles by refractive index: the index of refraction of a material is defined by the speed of light in vacuum, C, divided by the speed of light through the material, V

(4) However, the LEE of LEDs is limited due to the differences in the interface refractive index (RI) of LED chips, encapsulants, and the surrounding air.

Highly transparent thermal stable silicone/titania hybrids with high refractive index for LED encapsulation

where L denotes a layer with low refractive index and H denotes a layer with high refractive index, and p is the number of repeating periods.

REALIZATION OF POROUS SILICON MULTILAYER BANDPASS FILTERS IN MID-INFRARED RANGE

Preventing reflections requires controlling an abrupt change in "refractive index," a property that affects how waves such as light propagate through a material.