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Researcher Explains Physics Behind Sonoluminescence

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For 10 years scientists have struggled to explain the physics behind sonoluminescence, a phenomenon characterized by a tiny dot of light emanating from a solitary, sonically driven bubble. In a paper that appeared in the April 1 issue of Nature, researchers led by Sascha Hilgenfeldt of Harvard University in Cambridge, Mass., present an explanation. Simply put, a sound wave causes a bubble to grow from about 5 µm in diameter to about 70µm. When the sound field becomes compressive, the bubble collapses from the inertia of the surrounding water. As the collapse accelerates, the...Read full article

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    Published: June 1999
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