NationMaster - Encyclopedia: Absorption lines

A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow frequency range, compared with the nearby frequencies. ...

Results from FactBites:

Spectral line - Wikipedia, the free encyclopedia (1169 words)
	A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from an excess or deficiency of photons in a narrow frequency range, compared with the nearby frequencies.
	Absorption and emission lines are highly atom-specific, and can be used to easily identify the chemical composition of any medium capable of letting light pass through it (typically gas is used).
	Isomer shift is the displacement of an absorption line due to the absorbing nuclei having different s-electron densities from that of the emitting nuclei.

Absorption spectrum - Wikipedia, the free encyclopedia (408 words)
	An absorption spectrum is, in a sense, the inverse of an emission spectrum.
	Every chemical element has absorption lines at several particular wavelengths corresponding to the differences between the energy levels of its atomic orbitals.
	Absorption spectra can therefore be used to identify elements present in a gas or liquid.

More results at FactBites »

COMMENTARY

Share your thoughts, questions and commentary here

Want to know more?
Search encyclopedia, statistics and forums:

Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m