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Topic: Red Shift


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In the News (Fri 17 Feb 12)

  
  ESA - Space Science - What is 'red shift'?
The red shift of a distant galaxy or quasar is easily measured by comparing its spectrum with a reference laboratory spectrum.
However, to be accurate, the red shifts observed in distant objects are not exactly due to the Doppler phenomenon, but are rather a result of the expansion of the Universe.
Doppler shifts arise from the relative motion of source and observer through space, whereas astronomical redshifts are 'expansion redshifts' due to the expansion of space itself.
www.esa.int /esaSC/SEM8AAR1VED_index_0.html   (546 words)

  
 COSMOLOGICAL RED SHIFT
The dependence of the frequency shift of on the cosine of the angle made with the gravitational field is an approximation because of the fact that the photon's trajectory changes.
This shift is proposed as the main cause of the cosmological red shift.
The periodicity of the red shift whereby distant stars seem to show distances which show sudden jumps [7] would seem to suggest that there are quantum components to the effect of gravity on the red shift.
www.geocities.com /isoptera.geo/redaw.html   (3534 words)

  
 red shift. The Columbia Encyclopedia, Sixth Edition. 2001-05
Some red shifts are the result of the Doppler effect, i.e., of the relative motion of the earth and the object away from each other.
All distant galaxies show a red shift proportional to their distance from the earth as a result of the general expansion of space-time (see Hubble’s law).
Red shifts are also produced by gravitation (the gravitational red shift) in accordance with the general theory of relativity.
www.bartleby.com /65/re/redshift.html   (290 words)

  
 Red Shift Riddles
The fact that red shifts appear to be quantized has interesting implications for the study of the universe.
This suggests that the red shift may be caused by something other than the expansion of the universe, at least in part.
As noted earlier, a galaxys' redshift may not be a Doppler shift, it is the currently commonly accepted interpretation of the red shift, but there can be and are other interpretations.
www.cs.unc.edu /~plaisted/ce/redshift.html   (1738 words)

  
 Red shift - Wikipedia, the free encyclopedia
Red shift, an informal term for a bathochromic shift
Red Shift is a song by Peter Hammill (featuring Randy California), from his third album The Silent Corner and the Empty Stage.
Red Shift, a fictional supervillan in the Marvel Comics universe and one of the Heralds of Galactus
en.wikipedia.org /wiki/Red_shift   (177 words)

  
 Doppler Redshift
This shift is apparently a Doppler shift and indicates that essentially all of the galaxies are moving away from us.
The measured red shifts are usually stated in terms of a z parameter.
This red shift corresponds to a distance of 12 to 15 million light years, depending on what value of Hubble constant is used.
hyperphysics.phy-astr.gsu.edu /hbase/astro/redshf.html   (357 words)

  
 THE RED SHIFT
Redshift, change, or shift, in the light radiated by an object, such as a star or galaxy, that indicates the object’s motion.
The light of an object moving away from an observer is shifted toward a longer wavelength, or toward the color red.
If this same pattern appears but is shifted toward the red end of the spectrum, scientists know the object is moving away from Earth.
www.geocities.com /beyondearth2001/redshift.htm   (1677 words)

  
 Red Shift - Astronomy for Kids
The second part of the red shift puzzle is a little more complicated, but you can understand it.
The red end of the spectrum has a lower pitch, or frequency, than the blue end of the spectrum.
After they have calculated how much the light is shifted either towards red or blue, scientists can then calculate how far away the object is and how fast it is moving either towards us or away from us.
www.dustbunny.com /afk/skywonders/redshift   (968 words)

  
 red shift — FactMonster.com
All distant galaxies show a red shift proportional to their distance from the earth as a result of the general expansion of space-time (see
Red shifts are also produced by gravitation (the gravitational red shift) in accordance with the general theory of
Hubble's law: Discovery and Explanation of the Red Shift - Discovery and Explanation of the Red Shift Edwin Hubble first proposed this law in 1929 based on a...
www.factmonster.com /ce6/sci/A0841360.html   (321 words)

  
 Simple Unified Field Theory - THE RED SHIFT (via CobWeb/3.1 planet03.csc.ncsu.edu)   (Site not responding. Last check: 2007-10-10)
The consensus was that the shift was due to Doppler shift and that, because of the direction of the shift, the Spiral Nebula were receding.
It must be pointed out that the wavelength shift versus time will probably never be able to be tested locally since the parameters of the measuring equipment change at the same rate as the parameters of the effect being observed.
That is, both gravity and the Red Shift are caused by a small difference in the source and sink rates of space by the protons and electrons.
www.beotel.yu.cob-web.org:8888 /~mmalovic/boblock/redshift.htm   (932 words)

  
 Red Shift ~ Time Travels ~ Robert P. Fitton ~ Fitton's Books   (Site not responding. Last check: 2007-10-10)
As a man he figured flying high-speed aircraft would be the closest experience to journeying back through time, but even his test pilot training could not prepare him for the perils of time travel.
Assignment to the Red Shift experiments demanded much toil and energy with neither reward nor free time.
Meinkewitz was a father figure over the last fourteen months at Red Shift, and was a time travel theorist since the 1950's.
www.fittonbooks.com /TimeTravels/RedShift.php   (1561 words)

  
 6: Red Shift
Specifically, the galaxies' light spectra were shifted toward the red end of the spectrum.
In 1929 astronomer Edwin Hubble compared the galaxies' spectra with their distances, calculated using different methods, and showed that the amount of "red shift" was proportional to distance.
Hubble and others realized that the most obvious explanation for the "red shift" was that the galaxies were receding from Earth and each other, and the farther the galaxy, the faster the recession.
www.arachnoid.com /sky/redshift.html   (565 words)

  
 Redshift   (Site not responding. Last check: 2007-10-10)
A redshift is a shift in the frequency of a photon toward lower energy, or longer wavelength.
If the source of light is moving away from you then the wavelength of the light is stretched out, i.e., the light is shifted towards the red.
The Gravitational Redshift is a shift in the frequency of a photon to lower energy as it climbs out of a gravitational field.
astsun.astro.virginia.edu /~jh8h/glossary/redshift.htm   (232 words)

  
 Red Shift
But we have a few stories to tell all of you for the next Episode of Red Shift.
But we’ll be coming back swinging for the next episode of Red Shift.
On the next episode of Red Shift, liquid and I will be giving our thoughts on the title.
www.redshiftradio.com   (485 words)

  
 Doppler Effect   (Site not responding. Last check: 2007-10-10)
Today, the Doppler shift, as it is also known, applies to electromagnetic waves in all portions of the spectrum.
For example the spectral lines emitted by hydrogen gas in distant galaxies is often observed to be considerably redshifted.
Shifts in frequency result not only from relative motion.
archive.ncsa.uiuc.edu /Cyberia/Bima/doppler.html   (442 words)

  
 Halton Arp's discoveries about redshift
If the lines in the spectrum of the light from a star or galaxy appear at a lower frequency (shifted toward the red) than where they are observed in the spectrum of the Sun, we say this object has "positive redshift".
This interpretation is drawn by analogy with the downward shift in the pitch of a train whistle as it passes through a railroad crossing and then speeds away from us.
where zi is called the "intrinsic red shift of the object" and zv is the "red shift due to velocity of the object".
www.electric-cosmos.org /arp.htm   (3216 words)

  
 Gravitational red-shift.   (Site not responding. Last check: 2007-10-10)
This prediction was tested in Harvard by looking at light as it fell from a tower (an experiment requiring enormous precision since the changes in the gravitational force from the top to the bottom of a tower are minute) and the results agree with the predictions from the General Theory of Relativity.
A heavy object is denoted by a deformation of space represented by the funnel.
As light leaves the vicinity of this object it is shifted towards the red: for a sufficiently compact and massive object a blue laser on the surface will be seen as red in outer space.
phyun5.ucr.edu /~wudka/Physics7/Notes_www/node99.html   (210 words)

  
 Amazon.co.uk: Red Shift: Books: Alan Garner   (Site not responding. Last check: 2007-10-10)
I read this book when I was 14 - it was one of several that my English teacher recommended, not as part of the school curriculum, but because he thought they were good books (these were halcyon pre-National Curriculum days where teachers could often follow their own enthusiams, and thus build the same in others).
Red Shift would be the greatest children's book ever, if it wasn't really a dark and disturbing adult book subversively circulated to the young.
I was reading simple adventure stories and came across 'Red Shift' somehow and was completely captured by the pure imagination of it.
www.amazon.co.uk /Red-Shift-Alan-Garner/dp/0007127863   (1065 words)

  
 Doppler Shift   (Site not responding. Last check: 2007-10-10)
Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift).
In the star which is at rest with respect to us, or in a laboratory standard, the line wavelengths are 393 and 397 nm from Ca II [ionized calcium]; 410, 434, 486 and 656 nm from H I [atomic hydrogen]; 518 nm from Mg I [neutral magnesium]; and 589 nm from Na I [neutral sodium].
By measuring the amount of the shift to the red, we can determine that the bright galaxy is moving away at 3,000 km/sec, which is 1 percent of the speed of light, because its lines are shifted in wavelength by 1 percent to the red.
www.astro.ucla.edu /~wright/doppler.htm   (478 words)

  
 Classroom Activity: Determining Red Shift in a Receding Star
Other types of electromagnetic radiation like ultraviolet light, infrared light, radio waves and X-rays also travel in the form of a wave but at wavelengths to which our eyes are insensitive.
Being blue-shifted or red-shifted doesn't mean that the light necessarily becomes blue or red.
It means simply that the light's wavelength either is shortened (blue shifted) because the object giving off the light is approaching, or is lengthened (red-shifted) because the object is moving away from the observer.
www.pbs.org /deepspace/classroom/activity2.html   (1007 words)

  
 Grendel Roleplaying - Red Shift SF RPG and Others!
The Red Shift Science Fiction Roleplaying Game, first published in 1998, is now in its second edition.
Red Shift is designed to be playable by those who have never played a roleplaying game before, and yet still have the complexity that experienced players desire.
Red Shift is set in the year 2963.
www.grendelrp.com   (449 words)

  
 Redshift - Wikipedia, the free encyclopedia
In physics and astronomy, redshift occurs when the visible light from an object is shifted towards the red end of the spectrum.
More generally, redshift is defined as an increase in the wavelength of electromagnetic radiation received by a detector compared with the wavelength emitted by the source.
Any increase in wavelength is called "redshift" even if it occurs in electromagnetic radiation of non-optical wavelengths, such as gamma rays, x-rays and ultraviolet.
en.wikipedia.org /wiki/Redshift   (5371 words)

  
 How does doppler effect red shift (via CobWeb/3.1 planet03.csc.ncsu.edu)   (Site not responding. Last check: 2007-10-10)
It is unclear if a miami doppler radar of this doppler would be able to update their doppler shift to future transcranial doppler compensatory of National Weather Service Doppler such as Venous Doppler Test in the same Doppler Shift they would on a normal Christian Johann Doppler, if at all.
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how-does-doppler-effect-red-shift.lojka.com.cob-web.org:8888   (2547 words)

  
 Dinocrat » Red Shift
It is unclear if Schilling will be wearing his now-legendary bloody sock, which came to symbolize the Red Sox’ dramatic run to their first World Series title in 86 years.
But don’t be surprised if he waves it to the crowd, or if the crowd waves mock bloody socks at him in appreciation of his courageous pitching performances during the playoffs and World Series.
So if I were living in Massachusetts, or New Hamphire today, or anywhere within what Curt Gowdy called the Red Sox baseball network, I would listen to Schilling, and I would do whatever he told me to do.
www.dinocrat.com /archives/category/red-shift/page/4   (11507 words)

  
 Red Shift's Home Page   (Site not responding. Last check: 2007-10-10)
"Red Shift prove just why they still merit subsidy and support...a triumphant reminder of why they have survived for so long"
"Red Shift's cinematic style is thrilling, refreshingly vigorous and up-to-the-minute"
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www.redshifttheatreco.co.uk   (101 words)

  
 Red Shift   (Site not responding. Last check: 2007-10-10)
name David M. status educator age 60s Question - It is my understanding scientists think that the red shift is due to the stretching of space or the expansion of the universe.
------------------------------------------------ The red shift is not due to the stretching of space or the expansion of the universe directly.
Rather it is due to the Doppler shift, which says that the wavelength of any source of the wave increases as the source recedes and decreases as the distance of the source becomes closer.
www.newton.dep.anl.gov /askasci/ast99/ast99519.htm   (147 words)

  
 Red Shift
A Doppler shift of observed spectral lines toward longer wavelengths caused by the recession of the object; believed to occur because of the movement of celestial objects outward at increasing rates of speed, and providing the basis for theories suggesting that the universe is constantly expanding.
His quarters are empty and he sits on a small red couch, for the first time really taking in his surroundings.
The coordinates lead to a small attendant moon, orbiting Vex'y-la." She zooms in on a giant red planet midway between the nebula and the asteroid field.
glassonion.populli.org /archive/3/redshift.shtml   (21712 words)

  
 www.myspace.com/theredshiftfrequency   (Site not responding. Last check: 2007-10-10)
The Red Shift is the brainchild of 22 year old emcee/producer stain and 23 year old producer/deejay sleepyhead.
the Newcastle based alt.hip-hop combo are always striving to push the envelope, The Red Shift combine moody rhymes, abstract beats and diverse influences to create truly original music.
View All of The Red Shift 's Friends
www.myspace.com /theredshiftfrequency   (464 words)

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