Rayleigh disk

noun
Ray·​leigh disk | \ ˈrā-lē- \

Definition of Rayleigh disk

: a thin circular disk of mica or aluminum that when suspended in a beam of sound tends to set itself at right angles to the direction of propagation and by the angle assumed gives a measure of the sound intensity

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History and Etymology for Rayleigh disk

after Baron John W. S. Rayleigh †1919 English physicist

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Cite this Entry

“Rayleigh disk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rayleigh%20disk. Accessed 28 Jan. 2021.

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