Abstract
MR. MARTIN'S second question is more easily answered than his first. The surface tension of clean water is about three times as great as that of water containing soap, so when the soap touches the wet surface the surrounding wet being no longer pulled towards the soap as strongly as it is pulled away, obeys the latter force as fast as it can.
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BOYS, C. Movements on Water Surfaces. Nature 93, 214 (1914). https://doi.org/10.1038/093214b0
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DOI: https://doi.org/10.1038/093214b0


