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American Journal of Physics -- November 2001 -- Volume 69, Issue 11, pp. 1173
Classical Casimir effect for beads on a string
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Add to FacebookTwo small beads are situated at distance a apart on an otherwise uniform taut string. A transverse wave of angular frequency ω is incident from one side, exerting longitudinal forces F1 and F2, respectively, on the beads. The effective “force of attraction” between the beads, FC=(F1−F2)/2, is the simplest classical analog to the Casimir effect. We find that FC can be positive or negative, depending on the values of a and ω. For a broad spectrum of incident “noise,” however, the net “Casimir” force is zero. © 2001 American Association of Physics Teachers.
© 2001 American Association of Physics Teachers
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Received May 2001
Accepted Jun 2001
Accepted Jun 2001
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