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The unusual mathematics that gives rose petals their shape
The pointy edges of petals rely on a type of geometric feedback never before seen in nature.
Using theoretical analysis, computer simulations and experiments with rubbery plastic sheets, they established that as the petals curl outwards, mechanical feedback regulates their growth, leading to the formation of rolled edges and pointed corners at their tips. “You might learn new principles and then implement them in manmade structures,” says Eran Sharon, an experimental physicist at the Hebrew University of Jerusalem. Access the most recent journalism from Nature's award-winning team Explore the latest features & opinion covering groundbreaking research
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