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A Dunking Bird of the Second Kind
American Journal of Physics (2004)
  • Nadine Abraham
  • Peter Palffy-Muhoray, Kent State University - Kent Campus

The conventional dunking bird is a heat engine that relies on the temperature difference between the head and the tail of the bird for its operation. We describe a new type of dunking bird that is not a heat engine, but one that directly uses the chemical potential difference between liquid water and its vapor.

  • drinking bird,
  • capillary rise,
  • duck,
  • dynamics,
  • liquid
Publication Date
June 1, 2004
Publisher Statement
Copyright 2004 American Association of Physics Teachers. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Association of Physics Teachers. The following article appeared in Am. J. Phys. 72, 782 (2004) and may be found at
Citation Information
Nadine Abraham and Peter Palffy-Muhoray. "A Dunking Bird of the Second Kind" American Journal of Physics Vol. 72 Iss. 6 (2004)
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