How Exactly Do Stones Get Their Shape?

With the help ofSMBC comicsillustrator Zach Weiner , this hebdomad Minute Physics tackles the riddle of why some rock seem to be naturally round , while others end up flat , stark for skipping across a lake .

I do n’t desire to spoil the revelation , in particular since it ’s so entertainingly sketched by Zach this hebdomad . But the curt answer is it ’s subordinate on the pull of somberness , and whether the rock spends its life rolling about while it ’s bust and weathered , or if it remains fairly stationary during the process . So go spend 100 seconds getting smarter . [ Minute Physics ]

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