| 单词 | red shift |
| 释义 | red shift (once / 193760 pages) n WORD FAMILY red shift: red shifts USAGE EXAMPLESThis red shift, observed in the spectral lines of distant galaxies and interpreted as a Doppler effect, is the key to cosmology. Carl Sagan, Cosmos(1980) So it predicted that the red shift of a galaxy should be directly proportional to its distance from us, exactly as Hubble found. Stephen Hawking, A Brief History of Time: And Other...(1988) What Hubble saw is that light from very distant stars has red shifts, and the further away the star is, the larger the shift. Salon(Nov 25, 2012) n (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding Syn|Hyper redshift propagation the movement of a wave through a medium |
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