blackbody

noun
black·​body | \ ˈblak-ˈbä-dē How to pronounce blackbody (audio) \

Definition of blackbody

: an ideal body or surface that completely absorbs all radiant energy falling upon it with no reflection and that radiates at all frequencies with a spectral energy distribution dependent on its absolute temperature

Examples of blackbody in a Sentence

Recent Examples on the Web Moreover, this radiation should have the spectrum of a perfect blackbody, with only tiny imperfections at the ~0.01% level or less. Ethan Siegel, Forbes, 6 May 2021 But more sensitive measurements should undoubtedly reveal small deviations from the blackbody curve that COBE measured. Quanta Magazine, 30 June 2015 That would have shifted the CMB’s spectrum away from a blackbody. Quanta Magazine, 30 June 2015 That’s important, said John Mather, an astrophysicist at NASA Goddard who won a Nobel Prize in 2006 for measuring the CMB’s blackbody spectrum with COBE. Quanta Magazine, 30 June 2015 Two of the assumptions used to obtain the rules of blackbody radiation provide loopholes. Chris Lee, Ars Technica, 11 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blackbody.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of blackbody

1712, in the meaning defined above

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Time Traveler for blackbody

Time Traveler

The first known use of blackbody was in 1712

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Statistics for blackbody

Last Updated

18 May 2021

Cite this Entry

“Blackbody.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blackbody. Accessed 24 Jun. 2021.

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More from Merriam-Webster on blackbody

Britannica.com: Encyclopedia article about blackbody

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