absorption spectrum
A spectrum of absorption lines or bands, produced when light from a hot source, itself producing a continuous spectrum, passes through a cooler gas.
Absorption spectrum: Most stars are surrounded by outer layers of gas that are less dense than the core. The photons emitted from the core cover all frequencies (and energies).
absorption spectrum (dark-line spectrum): A spectrum that contains absorption lines.
acceleration: A change in a velocity; a change in either speed or direction. (See velocity.) ...
ABSORPTION SPECTRUM - Spectrum consisting of dark absorption lines superimposed over a continuum spectrum, created when a cooler gas absorbs photons from a hotter continuum source.
Absorption Spectrum
Dark lines superposed on a continuous spectrum, caused by the absorption of light passing through a gas of lower temperature than the continuum light source.
Absorption Trough ...
ABSORPTION SPECTRUM
An absorption spectrum (also called a dark-line spectrum) consists of dark absorption lines superimposed on a bright continuous spectrum.
Absorption spectrum
A material's absorption spectrum shows the fraction of incident electromagnetic radiation absorption by the material over a range of frequencies....
of atoms that were observed. Albert Einstein
Albert Einstein ...
4. An absorption spectrum appears as a continuous spectrum that is interrupted by a series of dark lines. HINT ...
See absorption spectrum. A substance which absorbs in such fashion is called a selective absorber and is to be contrasted with an ideal black body, white body, or gray body.
See absorption spectrum, spectral line, telluric lines, Fraunhofer lines, absorption band.
The composition of the medium through which the light travels determines the nature of the absorption spectrum. For instance, dark bands in the light emitted by a distant star are due to the atoms in the star's atmosphere.
(a) Dark lines visible in an absorption spectrum, or bright lines that make up an emission spectrum.
If the pattern produced by the emission or absorption spectrum is different for each element (and it is), then by looking at a spectrum, you can identify the gas that is involved in the production of the spectrum.
Hence when the photosphere is viewed through it an absorption spectrum is shown, but when it can be viewed separately a bright line spectrum appears.
Why does looking at a continuum source through a cloud of gas produce an absorption spectrum? Photons from the continuum source go into the cloud and the atoms absorb precisely those photons that match up with their atomic energy levels.
For example, in green plants, the action spectrum resembles the absorption spectrum for chlorophylls and carotenoids with peaks for violet-blue and red light.
A dark-line spectrum (also called a absorption spectrum) consists of dark absorption lines superimposed on a bright continuous spectrum.
Kirchhoff's Laws: These are a set of rules for remembering when and why one should observe a continuous spectrum of light, an emission spectrum, and/or an absorption spectrum. Solid bodies or dense gases or liquids give off continuous spectra.
The presence of a certain chemical element in such an absorption spectrum primarily indicates that the temperature conditions are suitable for a certain excitation of this element.
An emission spectrum consists of all the radiations emitted by atoms or molecules, whereas in an absorption spectrum, ...
Though called "strong lined" (from its strong absorption spectrum), its metal content is only about 10 percent greater than that of the Sun. The fascination with Kappa-1 Ceti comes from its activity.
Direct observational evidence for the existence of life such as the absorption spectrum of chlorophyll in light filtered through a planet's atmosphere is possible assuming future refinements in detection methods.
Continuous spectra are emitted by incandescent solids, liquids, or compressed gases. If some discrete lines are missing from a spectrum, it is an absorption spectrum (indicating the presence of elements that absorb particular wavelengths).
 See also: Absorption, Spectrum, Energy, Light, Atmosphere
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