Acoustic Black Holes

Acoustic black holes have been created artificially by physicists in an attempt to prove the existence of Hawking radiation. The sound-trapping black holes are made "...by coaxing a material to move faster than the speed of sound in that medium, so that sound waves traveling within it cannot keep up, like fish swimming in a fast-moving stream. The sound is effectively trapped in the stream-like event horizon."
Creative Commons Image : 'Black Hole' by Eggybird on Flickr
- 7-2-09
- Bill Machon's blog
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Comments
sick
Black Hole?
Welll....
They could have saved themselves a lot of money and just used my high school auditorium. ;>
www.flickr.com/photos/21366765@N03
this is interesting, buuuuuuutttt....
real black holes
sonic boom
...matter and energy.