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A buddy sent me these links at work today. Has anyone read about this?
There was some research a few years ago on how the pistol shrimp generated its "bang". It's not from each side of its claw slapping together as they thought, but the implosion of a cavitation bubble. It closes its claw so fast, the water jet creates a cavitation bubble that implodes creating a 200dB bang! A very short pulse of light is emitted due to the intense heating and from the wavelength of this light, the temperature inside this bubble was measured at 5000K, nearly the surface temperature of the sun! The same effect is generated by exciting a liquid droplet at its natural frequency with sound waves called sonoluminescence, so they refered to this as shrimpoluminescence... pretty cool stuff. http://stilton.tnw.utwente.nl/shrimp/ - see "Video Material" at the bottom http://news.nationalgeographic.com/n...ingShrimp.html - NG article about the research |
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