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Red shift
Light spectra shifted towards red, as by elongation of light waves from a source moving away from the detector.
📖 Definitions of "Red shift"
noun
- 1
Light spectra shifted towards red, as by elongation of light waves from a source moving away from the detector.
💡 Words with a Similar Meaning to "Red shift"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| gravitational redshiftnoun | (astronomy, physics) A shift to longer wavelengths of spectral lines emitted by atoms in a strong gravitational field. |
| redshiftnoun | (physics: astronomy, relativity) An increase in the wavelength of a photon or of light, corresponding to a lower frequency and a shift toward the red end of the electromagnetic spectrum. |
| blueshiftnoun | (physics: astronomy, relativity) A decrease in the wavelength of a photon or of light, corresponding to a higher frequency and a shift toward the blue end of the electromagnetic spectrum. |
| space reddeningnoun | (astronomy, astrophysics) The reddening of the light from distant stars because of selective absorption and scattering by interstellar dust |
| cosmological redshiftnoun | (astronomy) That part of any redshift that is accounted for by the expansion of spacetime following the Big Bang |
| doppler broadeningnoun | (physics) The broadening of the spectral lines of a high-temperature or rapidly-rotating object due to redshifting of spectral lines from atoms and molecules moving away from the observer and blueshifting of spectral lines from atoms and molecules moving toward the observer. |
| lightshiftnoun | (physics) The change in the energy (and thus frequency) of light upon interaction with matter. |
| bandshiftnoun | The movement of a band during electrophoresis or spectroscopy |
| doppler shiftnoun | The Doppler effect. |
| chemical shiftnoun | (chemistry, physics) The change in the nuclear magnetic resonance frequency of a nucleus depending on its electronic environment; used in NMR spectroscopy to determine the structure of molecules. |
| field shiftnoun | (physics) The portion of an isotope shift produced by the changing shape of a nucleus upon the addition of a neutron |
| fieldshiftnoun | Alternative spelling of field shift. [(physics) The portion of an isotope shift produced by the changing shape of a nucleus upon the addition of a neutron] |
| red detuningnoun | (physics) A situation in which the frequency is lower ("redder") than the resonance frequency. |
| phaseshiftnoun | (physics) A difference in phase values. |
| hubble diagramnoun | (astronomy) A diagram, used to illustrate the Hubble law, in which the velocity of an object (assumed to be approximately proportional to its redshift) is plotted with respect to its distance from the observer. |
| hubble lawnoun | (astronomy) A law stating that the velocity at which a distant object is receding from the Earth (as measured by its redshift) is proportional to its distance; observational evidence for an expanding universe. |
| lamb shiftnoun | (quantum mechanics, quantum electrodynamics) A small difference between the energy levels 2S_½ and 2P_½ of the hydrogen atom, not predicted by the Dirac equation, whose detection in the Lamb–Retherford experiment of 1947 foreshadowed the development of quantum electrodynamics (in which the discrepancy is explained to be an effect of the emission and re-absorption of virtual photons); such a difference between otherwise expectedly equal energy levels of hydrogen or any other type of atom. |
| isotope shiftnoun | (nuclear physics) a small difference in the transition energies of isotopes that corresponds to a given spectral line transition |
| light echonoun | (astronomy) A phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance, analogous to an echo of sound. |
| hubble's lawnoun | Alternative form of Hubble law. [(astronomy) A law stating that the velocity at which a distant object is receding from the Earth (as measured by its redshift) is proportional to its distance; observational evidence for an expanding universe.] |
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