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Also, red shift.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Red shift
is always a great word to know.
So is doohickey. Does it mean:
| a gadget; dingus; thingumbob. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
Dictionary.com's 21st Century Lexicon
| Main Entry: | red shift |
| Part of Speech: | n |
| Definition: | in astronomy, an increase in the wavelength of radiation emitted by astronomical objects, causing a shift of features in their spectra towards longer wavelengths due to their recession from the observer |
| Usage: | science |
American Heritage
Science Dictionary
| red shift
See under Doppler effect. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
red shift definition
In physics, the reddening of light sent out by an object that is moving away from an observer. (See Doppler effect.)
Note: The red shift that can be observed in light from distant galaxies suggests that the universe is expanding, and thus supports the Big Bang theory.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
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