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单词 redshift
释义
redshift
noun[CorU]
physicsspecialized(alsored shift)
uk
/ˈred.ʃɪft/us
/ˈred.ʃɪft/
aprocessin which thelightcoming fromfarawayobjectsinspaceisseentomovefrom theblueend of thespectrum(= therangeofcoloursinto which abeamoflightcan beseparated)to theredend as itmovesfartheraway, because thewavelengths(= thedistancesbetween thewavesofenergy)becomelonger:
The redshift of anobjectdirectlyindicatestherelativesizeof theuniversewhenlightwasemitted.
The Berkeleyastronomersmeasuredthesupernovaebyanalysingtheirredshift.
Compare
blueshift
More examples
  • Theobservedredshift of aremotegalaxyprovidesanestimateofitsdistance.
  • Ifgalaxiesaretryingtomovetogether, thentheirredshiftswill show it.
  • It isgenerallyagreedthat these redshifts arecausedby theexpansionof the Universe.
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You can also find related words, phrases, and synonyms in the topics:

Giving out light
(Definition ofredshiftfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)
redshift
noun[U]
astronomyspecialized
uk
/ˈred.ʃɪft/us
/ˈred.ʃɪft/
achangein the way thatlightreachestheearthfromstarsand otherobjectsinspacebecause they aremovingaway from theearth
（ 光波）红移

redshift| American Dictionary

redshift
noun[U]
us
/ˈredˌʃɪft/
physics
achangein the way thatlightreachestheearthfromstarsand otherobjectsinspacebecause they aremovingaway from theearth
(Definition ofredshiftfrom theCambridge Academic Content Dictionary© Cambridge University Press)

Examplesofredshift

redshift
How did the public accounts ofredshiftfrom 1920 to 1925 change, and how did they relate to the scientific reports of the time?
From theCambridge English Corpus
Determining the gamma-ray burst rate as a function ofredshift.
From theCambridge English Corpus
He also doubted that theredshiftof solar lines would ever be verified.
From theCambridge English Corpus
For definiteness, we estimate the rate of events at lowredshift(most of the geological record lies within the time corresponding to cosmologically low redshifts).
From theCambridge English Corpus
The large-scale structure of the universe also looks different if one only usesredshiftto measure distances to galaxies.
From
Wikipedia
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The survey has found hundreds of clusters of galaxies over an extremely wideredshiftrange.
From
Wikipedia
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The problem with this method is that hosts of active galaxies may not be typical of galaxies at theirredshift.
From
Wikipedia
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Other theories of gravitation require gravitationalredshift, although their detailed explanations for why it appears vary.
From
Wikipedia
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He has made notable contributions to astronomy in the areas of the evolution of highredshiftgalaxies, and mass ejection from active galaxies.
From
Wikipedia
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The purpose of the survey is to study the physical processes and evolution of galaxies atredshiftz 1.
From
Wikipedia
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However, based on itsredshift-independent distance estimates, it may range from 5 to 15 million light years.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
It is atredshift1.11, hence its name, corresponding to a distance of approximately 8.8 billion light years away.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
This requires measurements of the galaxies' internal velocity dispersions which is much more difficult than the determination of theredshift.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
With aredshiftof 5.47, light from this active galaxy is estimated to have taken around 12.3 billion light-years to reach us.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
The core of this idea is the measurement of the differential age evolution as a function ofredshiftof these cosmic chronometers.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/redshift##
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更新时间：2024/12/28 0:43:36