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red shift

or red·shift (rĕd′shĭft′)
An increase in the wavelength of radiation emitted by a receding celestial object as a consequence of the Doppler effect.

[From the fact that the longer wavelengths of light are at the red end of the visible spectrum.]


(Astronomy) a shift in the lines of the spectrum of an astronomical object towards a longer wavelength (the red end of an optical spectrum), relative to the wavelength of these lines in the terrestrial spectrum, usually as a result of the Doppler effect caused by the recession of the object. Compare: blueshift



a shift in the spectrum of a celestial object toward longer wavelengths, caused by the object's movement away from the viewer.
red′shift`ed, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.redshift - (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
propagation - the movement of a wave through a medium
References in periodicals archive ?
To break possible degeneracies these data will be supplemented with large-scale structure data, weak lensing and red-shift space distortions.
com)-- Bayramov's research in his new book - "Mechanics of Natural Force" - Flow Theory of Matter and Gravity argues that the cosmic red-shift is not caused by receding stars but by stellar gravitational flows, and shows that star-light coming from a remote star propagates asymmetrically through the gravitational flow of a local star.
The red-shift ability of soliton will be cancelled by the spectral recoil from the amplified DW2, which acts on the soliton and compensates for the Raman frequency shift when the soliton approaches the second zero dispersion wavelength.
iv) We can express the cosmological red-shift zc smaller than unity as:
Because each explosion emits almost exactly the same amount of light, astronomers can use a supernova's observed brightness to determine its distance, and then measure its red-shift, or how much its light is stretched, to determine how fast the supernova is moving away from Earth.
Specifically, the red-shift or blue-shift of the PL spectra of the poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene-vinylene] (MEH-PPV) loaded with organoclays was attribuled to changes of chain conformation from compact coil to extended coil or vice versa, respectively [15, 16].
By John Actually June 3, 2011 (BOR) --Jonglei state is currently facing red-shift in food prices that are mainly imported from the north Sudan (Khartoum), Uganda and Kenya due to impassible roads connecting Bor to Juba and the fading relationship with Khartoum government.
So Lehnert said he and colleagues have called it "the high red-shift blob.
and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and her team have spent the past four months analyzing images taken from the Multiband Imaging Photometer for Spitzer (MIPS), essentially looking back in time nearly 10 billion years at a high red-shift cluster known as CLG J02182-05102.
In spectroscopy, this phenomenon is known as red-shift, although it should also be remembered that such an effect is commonly observed, not only in van der Waals intermolecular systems, but also in hydrogen-bonded complexes formed by n electron donors [15-16].