Red Shift
Related Category: Astronomy: General
in astronomy, the systematic increase in the wavelength of all light received from a celestial object; it is observed in the shifting of individual lines in the spectrum of the object toward the red, ...
red shift
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Red Shift: The lengthening (or "stretching") of light waves coming from a source moving away from us. If a source of light is moving toward us, the opposite effect - called a "Blue Shift'' - takes place.
Red Shift The lengthening of the wavelength of electromagnetic radiation resulting from one or more of three causes: Doppler redshift: resulting from bodies moving away from each other in space.
Red shift- shift in the light of a retreating object toward red wavelengths, caused by the Doppler effect
Reflector- a telescope that forms an image with mirrors
Refractor- a telescope that forms an image with a lens ...
Red shift what happens when an object radiating light moves away from you really, really fast, in the same way a car's horn/clunking sounds lower when it goes away.
red shift Change in the wavelength of light emitted from a source moving away from us. The relative recessional motion causes the wave to have an observed wavelength longer (and hence redder) than it would if it were not moving.
RED SHIFT
The red shift is an increase in the wavelength of the light that is emitted from an object that is moving away from us. This increase in wavelength makes the object appear to be redder than it actually is.
red shift
A shift in the light emitted by galaxies towards the red end of the spectrum, indicating that the galaxies are moving away from each other, which suggests the universe is expanding
satellite ...
Red shift
When an object is traveling away from the Earth The light from this object is stretched out, making it look redder.
Revolve ...
The red shift due to Doppler effect for objects traveling near the speed of light.
Resolving Power
The ability of a telescope to reveal fine detail. depends on the diameter of the telescope objective ...
COSMOLOGICAL RED SHIFT
The cosmological red shift is a phenomenon in which light from distant sources is because space is expanding (and objects in the universe are receding from other objects due to this expansion).
red shift (NASA Thesaurus / NASA SP-7, 1965) In astronomy, the displacement of observed spectral lines toward the longer wavelengths of the red end of the spectrum. Compare space reddening.
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337. Red Shifts and Blue
Red Shifts: Lengthening of wavelengths of light as the object moves away from the observer. Blue shifts: Shorting of wavelengths of observed light when an object in moving toward the observer.
gravitational red shift A prediction of Einstein's general theory of relativity. Photons lose energy as they escape the gravitational field of a massive object.
relativistic red shift See red shift, note. relativistic velocity A velocity sufficiently high that some properties of a particle of this velocity have values significantly different from those obtaining when the particle is at rest.
QUASAR, acronym for quasi-stellar radio source, any of the blue, starlike objects that are strong radio emitters and the spectra of which exhibit a strong red shift. Quasars were identified as sources of intense radio emission in the late 1950s.
In the 1910s, Vesto Slipher and later Carl Wilhelm Wirtz interpreted the red shift of spiral nebulae as a Doppler shift that indicated they were receding from Earth.
I normally use "The Sky" from Software Bisque for planning my observing sessions and in helping me find objects, but it only has the Galilean moons for Jupiter so I used Red Shift (version 3 at the time) which I also had on my computer.
From the viewpoint of a distant observer, an object falling into a black hole appears to slow down, approaching but never quite reaching the event horizon: and it appears to become redder and dimmer, because of the extreme gravitational red shift ...
The radial velocity of a star away from or towards the observer can be determined by measuring the red shift or blue shift of its spectrum.
The spectrum of the star coming towards us is blue shifted (seen at shorter than normal wavelengths), while the spectrum of the star moving away from us is red shifted (longer wavelengths).
The General Theory of Relativity predicts that light coming from a strong gravitational field should have its wavelength shifted to larger values (what astronomers call a "red shift"), again contary to Newton's theory.
In 1929, Edwin Hubble discovered that the Doppler red shifts of other galaxies are directly proportional to their distances from the Milky Way.
Hubble discovered the expansion of the universe by measuring the red shifts of many galaxies. He also discovered that the recession velocity of a given galaxy is proportional to its distance from the Milky Way.
Thus the big bang theory was proposed by the Belgian priest Georges Lemaître in 1927 which was subsequently corroborated by Edwin Hubble's discovery of the red shift in 1929 and later by the discovery of the cosmic microwave background radiation by ...
Technique devised by Sir Martin Ryle and Allan Sandage to measure the spectral red shift of suspected quasars. It was this process that resulted in the discovery of quasi-stellar objects.
Ultraviolet Ga Stars ...
(If any of these terms like 'parallax', 'Cepheid' and 'red shift' are unfamiliar, try entering them in the search window on our home page).
Hubble used Cepheids to discover and calibrate distance with the red shift shown by distant galaxies.
cosmic microwave background radiation: Radiation from the hot clouds of the big bang explosion. Because of its large red shift, it appears to come from a body whose temperature is only 2.7 K.
In fact, this "red shift" seemed a universal feature, present in all directions and increasing with apparent distance. It seemed to suggest that all distant galaxies are moving away from us--the more distant they were, the faster their motion.
The blue field of planets, stars and galaxies stands for the universe. The black background represents dark energy and dark matter in space. The red border around the crew members' names stands for the red shift of light that shows how the universe ...
When a spectrograph is pointed at the center of the remnant a double line is seen, with the red shifted emission coming from the back of the shell while the blue shifted emission comes from the front.
cosmological distance
A distance far beyond the boundaries of our Galaxy. When viewing objects at cosmological distances, the curved nature of spacetime could become apparent. Possible cosmological effects include time dilation and red shift.
The change in frequency (or wavelength) of light (or other radiation) caused by the motion of an object or the observer. An object receding from an observer would exhibit a frequency shift toward a lower frequency (red shift) and vice-versa.
the red shift or the blue shift) can tell the astronomer how these bodies are moving.
For electromagnetic radiation the theory of the effect is not the same as for sound. This is because there is no fixed medium to give a frame of reference.
This decrease in wavelength makes the object appear to be bluer than it actually is. For example, when a star is travelling towards Earth, its light appears bluer (the light waves are shortened, shortening the wavelength). Compare with red shift.
The amount of shift in an object's spectrum is determined by how fast the object is moving. All of the distant galaxies have tremendous red shifts. Based on these data, scientists believe the universe is still expanding outward.
red shift When an object, such as a galaxy, is going away from you, the light it puts out appears to become longer in wavelength - that is, shifted towards the red (long) end of the spectrum.
 See also: Light, Universe, Time, Astronomy, Distance
  
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