| 词汇 | redshift |
| 释义 | redshift noun[ C or U ] physics specialized(alsored shift)uk /ˈred.ʃɪft/ us /ˈred.ʃɪft/ a process in which the light coming from far away objects in space is seen to move from the blue end of the spectrum(= the range of colours into which a beam of light can be separated) to the red end as it moves farther away, because the wavelengths(= the distances between the waves of energy) become longer: The redshift of an object directly indicates the relative size of the universe when light was emitted. The Berkeley astronomers measured the supernovae by analysing their red shift. Compare blueshift The observed redshift of a remote galaxy provides an estimate of its distance. If galaxies are trying to move together, then their red shifts will show it. It is generally agreed that these redshifts are caused by the expansion of the Universe. Astronomy albedo Andromeda Aquarius Aries asteroid galactic galaxy Gemini geostationary geosynchronous nova observatory orbit orbital Orion substellar sunspot supergiant supermassive supermoon You can also find related words, phrases, and synonyms in the topics: Giving out light redshift | American Dictionaryredshift noun[ U ] us/ˈredˌʃɪft/ physics a change in the way that light reaches the earth from stars and other objects in space because they are moving away from the earth Examples of redshiftredshift How did the public accounts of redshift from 1920 to 1925 change, and how did they relate to the scientific reports of the time? Determining the gamma-ray burst rate as a function of redshift. He also doubted that the redshift of solar lines would ever be verified. For definiteness, we estimate the rate of events at low redshift (most of the geological record lies within the time corresponding to cosmologically low redshifts). The large-scale structure of the universe also looks different if one only uses redshift to measure distances to galaxies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The survey has found hundreds of clusters of galaxies over an extremely wide redshift range. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The problem with this method is that hosts of active galaxies may not be typical of galaxies at their redshift. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Other theories of gravitation require gravitational redshift, although their detailed explanations for why it appears vary. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. He has made notable contributions to astronomy in the areas of the evolution of high redshift galaxies, and mass ejection from active galaxies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The purpose of the survey is to study the physical processes and evolution of galaxies at redshift z 1. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, based on its redshift-independent distance estimates, it may range from 5 to 15 million light years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is at redshift 1.11, hence its name, corresponding to a distance of approximately 8.8 billion light years away. From Wikipedia This 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 the redshift. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. With a redshift of 5.47, light from this active galaxy is estimated to have taken around 12.3 billion light-years to reach us. From Wikipedia This 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 of redshift of these cosmic chronometers. From Wikipedia This 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. |
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