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Balloon bursts give clue to fast cracks

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12:22pm, January 28, 2002

Ever since a fellow physicist pointed out to Robert D. Deegan that the edges of popped balloons have ripples like tiny shark teeth, he has wondered why. Now, Deegan and his colleagues at the University of Texas at Austin may have found a connection between that casual observation and a murky area of physics–the propagation of fast-moving cracks.

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