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出典:Wiktionary
出典:『Wiktionary』 (2026/02/28 16:34 UTC 版)
From an explanation of a principle of fluid dynamics given by E. M. Purcell, referring to the opening and closing motion of a scallop's hinge.
the scallop theorem
出典:Wikipedia
出典:『Wikipedia』 (2010/12/14 18:51 UTC 版)
The Scallop theorem states that to achieve propulsion at low Reynolds number in simple fluids (i.e. Newtonian fluids), a swimmer must deform in a way that is not invariant under time-reversal.
scallop theorem