Stone Skipping the Scientific Way

Using a machine launching aluminium disks Lyderic Bocquet, a physics professor at the University of Lyon, and his colleagues discovered the magic angle of 20° as that required to maximise stone skipping. Jerdone Coleman McGhee of Wimberley, Texas, holds the current Guinness Book of World Records title for a 1992 toss that yielded an impressive 38 bounces across the Blanco River in central Texas

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Photos from Flickr