Search results
- DictionaryRed·shift/ˈredˈSHift/
noun
- 1. the displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects. This is interpreted as a Doppler shift that is proportional to the velocity of recession and thus to distance.
Redshift definition: a shift toward longer wavelengths of the spectral lines emitted by a celestial object that is caused by the object moving away from the earth.. See examples of REDSHIFT used in a sentence.
'Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum. Something similar happens to sound waves when a source of sound moves relative to an observer.
May 11, 2022 · When astronomers stare into the deep universe or at the spectra of a distant star subtly hiding an exoplanet, they need to account for its movement. That relies on two phenomena —...
redshift | American Dictionary. noun [ U ] us / ˈredˌʃɪft / Add to word list. 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. (Definition of redshift from the Cambridge Academic Content Dictionary © Cambridge University Press) Examples of redshift.
Mar 31, 2024 · In general, whether its origin is the expansion of space or the motion of an object, redshift is a quantification of the stretching of the wavelength of light. We use the symbol z z to denote redshift and define it as: z ≡ (λreceived −λemitted)/λemitted.
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 colors 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:
Jan 24, 2021 · January 24, 2021. Image via Wikimedia Commons. Astronomers use redshifts to measure how the universe is expanding, and thus to determine the distance to our...
