WHAT DOES REFRACTIVE INDEX MEAN IN ENGLISH?
Refractive index
In optics the
refractive index or
index of refraction n of a substance is a dimensionless number that describes how light, or any other radiation, propagates through that medium. It is defined as , where
c is the speed of light in vacuum and
v is the speed of light in the substance. For example, the refractive index of water is 1.33, meaning that light travels 1.33 times slower in water than it does in vacuum. Refraction of a light ray. The refractive index determines how much light is bent, or refracted, when entering a material. This is the historically first use of refractive indices and is described by Snell's law of refraction,, where and are the angles of incidence and refraction, respectively, of a ray crossing the interface between two media with refractive indices and. The refractive indices also determine the amount of light that is reflected when reaching the interface, as well as the critical angle for total internal reflection and Brewster's angle.
Definition of refractive index in the English dictionary
The definition of refractive index in the dictionary is 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 ν, μ.
10 ENGLISH BOOKS RELATING TO «REFRACTIVE INDEX»
Discover the use of
refractive index in the following bibliographical selection. Books relating to
refractive index and brief extracts from same to provide context of its use in English literature.
1
Physics and applications of negative
refractive index materials
The book discusses the design, optimization, and testing of structured metamaterials as well as applications of metamaterials at frequencies ranging from radio wave to optical.
S. Anantha Ramakrishna, Tomasz M. Grzegorczyk,
2009
2
Analytical Chemistry for Technicians, Third Edition
Equation (15.6), the refractive index of the liquid is given by: liquid =7?glasSXsin
fcri. (15.?) The instrument that measures the refractive index is called a
refractometer. In the Abbe refractometer, a common type of refractometer, a small
liquid ...
3
Size Exclusion Chromatography
9.1 Separation of Oligomers 9.1 .1 Refractive Index and MW A differential
refractive index detector (RI refractometer) and an ultraviolet (UV) absorption
detector are the most commonly used detectors for SEC. Molecular weight (MW)
averages ...
Sadao Mori, Howard G. Barth,
1999
4
Waveguide Structuring and Bragg Grating Fabrication by ...
UVbeam with a constant velocity. The results obtained for this simple structure
are the basis for the design of the more complicated ones. The waveguiding in
these material systems is enabled by a refractive index change inside the core
layer.
5
Development of Optical Fiber Sensors for Distance, ...
The sensor probe fabricated for the polymer tip based distance sensor is
extended to refractive index measurement by submerging the polymer core in the
liquid whose refractive index needs to be measured. The effective refractive
index of ...
6
Optical Pulse Dynamics in Active Media with Negative ...
been traveling from a higher to a lower refractive index, its propagation direction
would bend away from the normal. n 1 > 0 n 2 < 0 n 1 n 1 > 0 n 2 < (a) (b) Figure
1.3: Snell's Law: (a) The wave denoted by the arrow leaves a material with ...
Kathryn E. Rasmussen,
2008
7
Clinical Contact Lens Practice
1.37 1.38 1.39 1.4 1.41 1.42 1.43 1.44 1.45 Measured Refractive Index (n) FIG.
7A.13. Relationship between refractive index of a conventional hydrogel contact
lens and its water content. Note that the volumetric water content (%v/v) is 5% to ...
Edward S. Bennett, Barry A. Weissman,
2005
8
Clinical Optics and Refraction: A Guide for Optometrists, ...
Although the absolute refractive index of air is 1.00029, it is generally acceptable
to state that the refractive index of air is 1.0. When light passes from one optical
medium to another, e.g. from air to glass, glass to water, the refractive effect is the
...
Andrew Keirl, Caroline Christie,
2007
9
Capillary Electrophoresis: Theory and Practice, Second Edition
In reality, the low sensitivity of the detector to analyte and its high sensitivity to
environmental fluctuations lead to mediocre performance for the refractive index
detector. There have been very few applications of refractive index
measurements ...
10
Fundamentals of Forensic Science
Ifa piece ofglass is immersed in a liquid whose refractive index matches that ofthe
glass, then the glass should be invisible because light that passes through the
glass would have the same refractive index as the liquid and our eyes would not
...
Max M. Houck, Jay A. Siegel,
2010
10 NEWS ITEMS WHICH INCLUDE THE TERM «REFRACTIVE INDEX»
Find out what the national and international press are talking about and how the term
refractive index is used in the context of the following news items.
Here's the physics behind why the Apple Watch's pricier sapphire …
Air has a refractive index of about 1 (the lowest number possible), regular glass is 1.5, and sapphire is 1.77. (There's no official upper bound for refractive index, ... «Business Insider, Apr 15»
Concentration Measurement with Refractive Index
There are many methods used to measure concentration including refractive index, conductivity, pH, and osmolality. However, when the FDA document was ... «Genetic Engineering & Biotechnology News, Apr 15»
Optilab® T-rEX™ Refractive Index Detector for HPLC/GPC from …
The Optilab® T-rEX™ (refractometer with EXtended range) is used in conjunction with any HPLC, FPLC, GPC or FFF separation system, plus a Wyatt multi-angle ... «News-Medical.net, Feb 15»
A simple method to prevent reflection at optical fiber interfaces
The effective refractive index of the SWG can be controlled by its filling ratio, and thus we can obtain an optimum refractive index for a single-layer AR coating. «SPIE Newsroom, Feb 15»
Optilab® UT-rEX™ Refractive Index Detector for UHPLC from Wyatt …
The Optilab® UT-rEX™ (UHPLC refractometer with EXtended range) is the first RI detector specifically designed for use with any UHPLC system. It works alone ... «News-Medical.net, Jan 15»
Engineering discovery brings invisibility closer to reality
Xin reported his findings with co-authors in an article, "Microwave Gain Medium With Negative Refractive Index," just published in the online journal Nature ... «Phys.Org, Jan 15»
New technique to help produce next-generation photonic chips
The high refractive index of silicon makes optical structures the size of a fraction of the diameter of a human hair possible. Squeezing more and more optical ... «Phys.Org, Nov 14»
Large-aperture planar lens antennas with gradient refractive index
A paper titled "Three-dimensional large-aperture lens antennas with gradient refractive index," published in SCIENCE CHINA Information Sciences, 2013, No. «EurekAlert, Dec 13»
Zero-Index Material Generates Nonlinear Light
BERKELEY, Calif., Dec. 6, 2013 — A unique optical metamaterial with a refractive index of zero was used to generate light waves that gain strength as they ... «Photonics.com, Dec 13»
Spectroscopic imaging ellipsometry of graphene
Figure 2. Complex refractive index of exfoliated graphene in the visible range, obtained by inversion (circles), parameterized by the Fano line-shape (solid lines), ... «SPIE Newsroom, Dec 13»