Observatoire des droits humains (anglais seulement)

Maple seeds’ unique spinning motion allows them to travel far even in the rain, a new study shows

(Version anglaise seulement)

par Andrew Dickerson, Associate Professor of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee

When wind or other disturbances detach winged maple seeds called samaras from their parent tree, they spin through the air – and can even spin when it’s raining. Impacts by high-speed raindrops only briefly interrupt the seed’s spinning because the seed can shed the drop rapidly and restart its spinning in less time than it takes to blink.

If you live somewhere with maple trees, you’ve probably seen their striking helicopter seeds – made up of a seed pod attached to a delicate wing. Maple samaras’ unique…

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