measurement of refractive index

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• Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …   Wikipedia

• refractive index — noun the ratio of the velocity of light in a vacuum to that in a medium • Syn: ↑index of refraction • Hypernyms: ↑ratio * * * reˌfractive ˈindex 7 [refractive index] noun …   Useful english dictionary

• index — 1. [NA] SYN: i. finger. 2. A guide, standard, indicator, symbol, or number denoting the relation in respect to size, capacity, or function, of one part or thing to another. SEE ALSO: quotient, r …   Medical dictionary

• List of refractive indices — Many materials have a well characterized refractive index, but these indices depend strongly upon the frequency of light. Standard refractive index measurements are taken at yellow sodium D line, 589 nanometres.There are also weaker dependencies… …   Wikipedia

• N —    1. see normal    2. see newton    3. a unit of refractive index sometimes used in atmospheric science. The index of refraction of the atmosphere is only slightly greater than 1. The value of the index in N units is the number of millionths by… …   Dictionary of units of measurement

• Saccharimeter — A saccharimeter is an instrument for measuring the concentration of sugar solutions.This is commonly achieved using a measurement of refractive index (refractometer) or the angle of rotation of polarization of optically active sugars… …   Wikipedia

• refractometry — noun The measurement of refractive index See Also: refractometer, refractometric …   Wiktionary

• Calculation of glass properties — [ refractive index. [ [http://glassproperties.com/refractive index/ Calculation of the Refractive Index of Glasses] ] ] The calculation of glass properties (glass modeling) is used to predict glass properties of interest or glass behavior under… …   Wikipedia

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

• Brix — For other uses, see Brix (disambiguation). Degrees Brix (symbol °Bx) is the sugar content of an aqueous solution. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solution as percentage by weight (% …   Wikipedia

• Speed of light — The speed of light in the vacuum of free space is an important physical constant usually denoted by the letter c . [NIST and BIPM practice is to use c 0 for the speed of light in vacuum in accord with international standard ISO 31 5. See… …   Wikipedia