absorption spectra. Compare with absorption spectroscopy. A plot that shows how much radiation a substance absorbs at different wavelengths. Absorption spectra are unique for each element and compound and they are often used as chemical 'fingerprints' in analytical chemistry. The spectrum can represented by a plot of either absorbance or transmitta...
Found on
http://antoine.frostburg.edu/chem/senese/101/glossary/a.shtml
the pattern of dark and light bands that is seen when a gem is observed with a spectroscope. These bands result from the absorption of certain wavelengths of white light passing through the stone. The colors that are NOT absorbed determine the color of the gem.
Found on
http://gemologyproject.com/wiki/index.php?title=Glossary_of_Terms
(from the article `chemical element`) ...an emission, or bright-line, spectrum. When light passes through a gas or cloud at a lower temperature than the light source, the gas absorbs at ... ...may be classified according to the nature of their origin, i.e., emission or absorption. An emission spectrum consists of all the radiations ... ...
Found on
http://www.britannica.com/eb/a-z/a/7
Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states.
Found on
http://www.chemistry-dictionary.com/definition/absorption+spectrum.php
A spectrum of absorption lines or bands, produced when light from a hot source, itself producing a continuous spectrum, passes through a cooler gas. A material's absorption spectrum shows the fraction of incident electromagnetic radiation absorbed by the material over a range of frequencies. An abso...
Found on
http://www.daviddarling.info/encyclopedia/A/absorption_spectrum.html
Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states. An absorption spectrum is the inverse of an emission spectrum.
Found on
http://www.encyclo.co.uk/local/20728
<chemistry> A graph of the amount of light a substance absorbs, plotted as a fuction of energy, frequency or wavelength. ... (15 Jan 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
The specific bands of light that pass through and those that get absorbed in a gem or mineral and disperse into the colors of the spectrum. Different gems have different absorption spectra, meaning they are all unique in regard to which colors are absorbed and which pass through. This plays a major role in identifying gems, and can easily distingu...
Found on
http://www.encyclo.co.uk/local/22291
Spectrum of wavelengths of electromagnetic radiation (usually visible and UV light) absorbed by substance. Absorption is determined by existence of atoms that can be excited from their ground state to an excited state by absorption of energy carried by a photon at that particular wavelength.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Type: Term Definitions: 1. the spectrum observed after light has passed through, and been partially absorbed by, a solution or translucent substance; many molecular groupings have characteristic light absorption patterns, which can be used for detection and quantitative assay.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=83370
[
n] - the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
Found on
http://www.webdictionary.co.uk/definition.php?query=absorption%20spectrum
The collection of wavelengths missing from a continuous distribution of wavelengths. Caused by the absorption of certain wavelengths by the atoms or molecules in a gas.Absorption spectra are unique for each element and compound and they are often used as chemical fingerprints in analytical chemistry. The spectrum can represented by a plot of either...
Found on
https://www.encyclo.co.uk/local/20687
noun the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths
Found on
https://www.encyclo.co.uk/local/20974
the spectrum formed by electromagnetic radiation that has passed through a medium in which radiation of certain frequencies is absorbed.
Found on
https://www.infoplease.com/dictionary/absorption-spectrum
No exact match found.
