“The well known elevation of the pitch of wind instruments, in the course of playing, sometimes amounting to half a note, is not, as is commonly supposed, owing to any expansion of the instrument, for this should produce a contrary effect, but to the increased warmth of the air in the tube.”

"Outlines of Experiments and Inquiries Respecting Sound and Light" (1800)

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Thomas Young (scientist) 28
English polymath 1773–1829

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