Spiralling upward
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Kalman Schulgasser; Allan Witztum
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Article
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2004
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Elsevier Science
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English
β 279 KB
Thin vertical leaves often manifest twist. Perhaps the most prominent example of this is in Typha sp., but such twist is also apparent in Narcissus, Pancratium and many other genera. Such a blade is often referred to as a "spiral leaf". We will indicate the mechanical advantage afforded to the leaf