June 25, 2009
YHBT?
— srikanth @ 7:30 pm, GMT +0000 ( 1245958222 ) 
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You’ve all heard of (1), but a similar phenomenon exists elsewhere. (2) and (3) are illustrations/caricatures of this. What?
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Answer:
Acoustic black holes, or dumbholes in short. Check out Logik’s answer for the whole funda.
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June 25th, 2009 at 8:56 pm, GMT +0000 ( 1245963419 )
‘Dumb Holes’, the acoustic analogue to the Black Holes?
June 25th, 2009 at 9:17 pm, GMT +0000 ( 1245964662 )
Would it be an Acoustic Black Hole?
June 25th, 2009 at 9:40 pm, GMT +0000 ( 1245966042 )
Black Hole.
June 25th, 2009 at 10:06 pm, GMT +0000 ( 1245967612 )
1 is a black hole and 2/3 are references to non-gravitational black holes, ones for sound, for instance, which are called acoustic black holes?
June 25th, 2009 at 10:44 pm, GMT +0000 ( 1245969874 )
Dumb hole? A non-gravitational acoustic black hole, that is.
June 26th, 2009 at 12:48 am, GMT +0000 ( 1245977320 )
Acoustic black holes
June 26th, 2009 at 4:44 am, GMT +0000 ( 1245991456 )
is it the Black Hole…
June 26th, 2009 at 5:15 am, GMT +0000 ( 1245993323 )
Non gravitational black holes?
June 26th, 2009 at 5:16 am, GMT +0000 ( 1245993416 )
Oh sorry, acoustic black hole
June 26th, 2009 at 6:24 am, GMT +0000 ( 1245997487 )
acoustic black hole
June 26th, 2009 at 6:46 am, GMT +0000 ( 1245998788 )
black holes and the artificially created sonic black holes.
June 26th, 2009 at 7:14 am, GMT +0000 ( 1246000480 )
Answering my own question…
This is called a dumb hole. analogous to the ‘black hole’. also called an “Acoustic Black hole” by the purists.
Has been recently created by a bunch of physicists in a B.E condensate condition.
June 26th, 2009 at 8:04 am, GMT +0000 ( 1246003454 )
non-gravitational blackholes
June 26th, 2009 at 8:27 am, GMT +0000 ( 1246004874 )
1. Illustration of Hawking Radiation.
2. Appears to be related to the buzz around LHC creating Micro-BlackHoles.
Connect: Acoustic or Sonic Hawking Radiation??
Used in unifying gravitational theories with quantum theories.
June 26th, 2009 at 9:59 am, GMT +0000 ( 1246010373 )
Black Hole
June 26th, 2009 at 11:48 am, GMT +0000 ( 1246016929 )
Acoustic black hole
June 26th, 2009 at 12:00 pm, GMT +0000 ( 1246017630 )
A sonic black hole? dunno anything more catchy to call it… sound trap?
June 26th, 2009 at 8:01 pm, GMT +0000 ( 1246046513 )
1= Black hole. 2,3 = acoustic black hole or black hole for sound
June 27th, 2009 at 9:25 am, GMT +0000 ( 1246094740 )
Dumb hole