Letter | Published:

“The Ash Seed Screw”

Nature volume 13, pages 512513 | Download Citation

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Abstract

THE delicate twist in the samara of the ash is clearly not that best calculated to retard descent. The more decided the twist, the greater number of revolutions will the samara perform ere reaching the ground, and the longer consequently will be the path through which its friction is exercised.

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  1. London, April 15

    • WM MCLAURIN

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DOI

https://doi.org/10.1038/013512c0

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