Definition of redshift

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Meadowlark Optics - Wave Plates 6/24 LB 2024

Photonics Dictionary

redshift: The displacement of spectrum lines, as determined by the increasing distance between, and the relative velocity of, the observer and a light source, causing the lines to move toward the red portion of the spectrum. It is used in astrophysics to determine the rate of recession or expansion of celestial bodies. Also known as the Hubble effect.

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