period-luminosity law

noun

Definition of period-luminosity law

: a law in astronomy: the period of light variation of a Cepheid variable is in direct relation with its absolute magnitude whereby intrinsically fainter stars have the shorter periods

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Dictionary Entries Near period-luminosity law

period key

period-luminosity law

period of reverberation

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Cite this Entry

“Period-luminosity law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/period-luminosity%20law. Accessed 19 Sep. 2021.

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