When you finally get home after a hard day’s work, the whistle of a stove-top kettle can be a truly comforting sound. Until now, scientists have been unable to explain what makes the noise. But a ...
WASHINGTON D.C. Nov. 15, 2013 -- Despite decades of brewing tea in a whistling kettle, the source and mechanism of this siren sound of comfort has never been fully described scientifically.
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