diving,fluid dynamics,olympics,physics
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Divers twist and spin gracefully in the air, but the highest marks come when they enter the water with little to no splash. This rip entry—named after paper-ripping sound characteristic of such a dive—is possible thanks to fluid dynamics. Any time a solid object enters a still liquid, it tears a cavity into the liquid. The smaller this cavity is, the less the liquid will rebound and splash when the cavity gets refilled.
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