radiant flux

noun

: the rate of emission or transmission of radiant energy

Examples of radiant flux in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Just how much heating takes place is a bit complicated, depending on the actual radiant flux from the sun, Earth’s distance away and reflectivity, and more. Phil Plait, Scientific American, 3 July 2025 It’s guaranteed to provide optimum energy and radiant flux and when the intensity and efficiency isn’t there, this machine will shine the light and make things flow again. Bob McManaman, The Arizona Republic, 20 July 2021

Word History

First Known Use

1917, in the meaning defined above

Time Traveler
The first known use of radiant flux was in 1917

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Cite this Entry

“Radiant flux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiant%20flux. Accessed 16 Jul. 2025.

Medical Definition

radiant flux

noun
: the rate of emission or transmission of radiant energy

More from Merriam-Webster on radiant flux

Last Updated: - Updated example sentences
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