| Craggy border
corrals waves on tiny drum
Unlike an ordinary
round drum, a surface with a jagged rim can vibrate in some regions
while remaining still in others—and the explanation is somewhat
unexpected.
References:
Even, C. ... and
B. Sapoval. 1999. Localizations in fractal drums: An experimental
study. Physical Review Letters 83(July 26):726.
Further Readings:
Peterson, I. 1997.
Fractal past, fractal future. Science News 151(March 1):S13.
______. 1994.
Beating a fractal drum. Science News 146(Sept. 17):184.
Sources:
Catherine Even
Laboratoire de Physique des Solides
Université Paris-Sud
91405 Orsay
France
Benoit B.
Mandelbrot
Yale University
Department of Mathematics
10 Hillhouse Avenue
P.O. Box 208283
New Haven, CT 06520-8283
Raymond L.
Orbach
University of California, Riverside
4148 Hinderaker Hall
900 University Avenue
Riverside, CA 92521
Bernard Sapoval
École Polytechnique
Laboratoire de Physique de la Matière Condensée
91128 Palaiseau Cedex
France
Richard P. Wool
University of Delaware
Center for Composite Materials
201 Composites Manufacturing Science Laboratory
Newark, DE 19716-3144
From Science
News, Vol. 156, No. 5, July 31, 1999, p. 69. Copyright © 1999,
Science Service. |