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red shift




redshift
Astronomynotes.com
The displacement of spectral lines in the spectrum of an object toward longer wavelengths. If caused by the line-of-sight recession of the object (see Doppler effect), as is usually the case, this displacement, when measured, allows the recessional velocity to be calculated. Redshift is given by the formula:

redshift


Compare with blue shift.


Related categories

   • ASTRONOMICAL QUANTITIES
   • SPECTRA AND SPECTROSCOPY