How to skim stones, skimming stones on water, how to skim stones, how to skim stones, ski the great potato.
The conventional wisdom for skimming (or skipping) stones on streams is to find a round, flat stone to maximize your distance and number of skips. That's still good advice, but a pair of researchers has an addendum. Unconventional stones can generate beautiful bounces.
Mathematicians Ryan Palmer of the University of Bristol and Frank Smith of University College London published a notice on "the role of body shape and mass in skimming on water" in the Proceedings of the Royal Society A appraise on Wednesday. The researchers developed a mathematical model to look at how objects of different shapes and masses interact with the surface of water.
It's not just in quantity of skips, but also about quality. Heftier, hooked stones can generate impressive leaps. "If you've got a heavier rock, you can get a super-elastic response, where you get a single mega-bounce rather than lots of limited bounces," Palmer told The Guardian. "There's this almighty leap out of the water." Palmer suggested trying out a stone that looks like a potato.
It's easy to get lost in the fun side of the view, but Palmer highlighted its serious application in a series of tweets on Wednesday. "Our interest wasn't really on skimming rocks (though it is in scope), but rather the topic of aircraft icing - how ice builds up on aircraft during trips and how it may be mitigated," Palmer tweeted. "In this case, the skimmer is an ice crystal and the soaks a layer on the aircraft."
You can put this view into action on your own. Find a nice body of soaks and a good selection of stones and see what you can get out of them. Try weird-shaped stones. Heavy ones with curved bottoms. What happens? Big bounces? Lots of skips?
The stone is considerable, but successful skimming is also about good technique. The Guinness World Record for most skips of a skimming stone belongs to Kurt Steiner, who generated an astounding 88 skips in 2013. Steiner prefers thin, unruffled, flat-bottomed stones. Guinness currently keeps records for most skips and farthest distance. Maybe it's time to add a category for highest bounce.
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