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The maddening 'plink, plink' of dripping water decoded
JAY GORY, MANAGING EDITOR, science
In 1908, Arthur Mason Worthington published a treatise, "A Study of Splashes", featuring the first known photograph in a scientific journal of a drop as it punctures a body of water's still surface. Finally, in 1955, scientists noticed the formation of a tiny bubble of air briefly trapped beneath the cavity as it took shape, speculating that when it burst sound waves rose to the surface and escaped into the air. "Until now, everyone thought these sound waves just passed through the water surface and that's how we heard the sound, much like if you hear someone speaking through a wall," said Samuel Phillips, an undergraduate student at the University of Cambridge and lead author of a study in Scientific Reports. read more
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