second sound

noun

: transfer of heat which is much faster than conduction or convection, which is observed only in helium II, and in which waves of temperature resembling sound waves travel at speeds of about 20 meters per second

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Cite this Entry

“Second sound.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/second%20sound. Accessed 8 Dec. 2022.

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