A Bubble Full of Sunshine
Temperatures inside bursting bubbles can be four times hotter than the Sun
Chemists at the University of Illinois have determined that temperatures inside gas bubbles collapsing in a liquid reach roughly 20,000 degrees Kelvin—four times hotter than the surface of the Sun. They made the discovery by blasting the liquid with intense sound waves and measuring "sonoluminescence," the light emitted from the bubbles as they form and collapse. According to the researchers, it is the first time anyone has measured the temperature inside a single collapsing bubble.
Their work was supported by the National Science Foundation and the Defense Advanced Research Projects Agency, and published in the March 3, 2005, issue of the journal Nature.
For further information, see the University of Illinois news release.
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