#111977 - 09/12/03 06:07 PM
a cosmic foghorn
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Carpal Tunnel
Registered: 06/24/02
Posts: 7184
Loc: Vermont
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http://news.bbc.co.uk/2/hi/science/nature/3096776.stmfascinating stuff. 57 octaves below middle-C.  and if the chalker had been using Chandra, I'd a gotten it...
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formerly known as etaoin...
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#111978 - 09/12/03 07:59 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 03/15/00
Posts: 11578
Loc: Louisville, Kentucky
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Here's the link without the extra http: http://news.bbc.co.uk/2/hi/science/nature/3096776.stmWow, that's cool! Thanks, eta.
Sound waves spreading out from the cavities could provide the much sought after heating mechanism. Is that really so? That sound waves can carry heat; or maybe generate it? Can there be friction in space?
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#111979 - 09/12/03 08:06 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 09/28/00
Posts: 2888
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That *is* interesting. I know nothing about music, so no comments please if this is a ridiculous question...If you can't hear a B flat like that, can you feel it.
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#111980 - 09/12/03 08:56 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 04/09/00
Posts: 3065
Loc: Jakarta
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From the BBC article:
The black hole lives in the Perseus cluster of galaxies, located 250 million light-years away.
Like I keep saying, look it up in Perseus.
Bingley
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Bingley
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#111982 - 09/12/03 11:36 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 06/24/02
Posts: 7184
Loc: Vermont
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well, think about the lowest note you ever heard, maybe a truck going by, or an earthquake. this is so many times lower it's bassically(!) incomprehensible. and it's been playing for 2.5 billion years(I think they mean 9 zeros... ) you wouldn't feel this note, I would think; the waves are too big. you are inconsequential to them. awesome. Jackie, thanks for the link fix; I hadn't noticed my error. and as for the heat, somebody smarter than me will have to explain that one. 
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#111984 - 09/12/03 11:51 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 03/13/01
Posts: 4189
Loc: Rio Grande, Cape May County, N...
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Cosmic FoghornOkay, we've got the *name of the group, now all we need is a few players. Lessee...Pfranz definitely fits into this one...bass, lead, or rhythm, Cap? And don't all you keyboardists raise your hands at once. With a name like that we have to build on the foundation once created by Yes, The Moody Blues, Genesis, Jethro Tull...and, oh, okay... Pink Floyd...and, I guess, a little psychedelia, too, ala Uriah Heep...and go from there. Eta, looks like you're the producer. 
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#111985 - 09/12/03 11:56 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 06/24/02
Posts: 7184
Loc: Vermont
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haha! that's great!  I have been known to sing a bit...
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#111989 - 09/15/03 09:50 AM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 03/15/00
Posts: 6511
Loc: lower upstate New York
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#111991 - 09/17/03 06:59 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 06/24/02
Posts: 7184
Loc: Vermont
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umm, octaves don't got necessarily anything to do with decibels. do you want to try again? I'm not sure what you're askin'...
57 octaves below just means it's real low.
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#111993 - 09/17/03 07:55 PM
Re: a cosmic foghorn
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Carpal Tunnel
Registered: 06/24/02
Posts: 7184
Loc: Vermont
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ah, Anna, I found this in the article: With a frequency over a million, billion times deeper than the limits of human hearing, it is the deepest note ever detected from an object in the Universe. is this what you're wondering about? an octave lower would be half the frequency of the octave above, so, for example, if middle Bb is around 200cps(cycles per second) then the octave below that is 100 cps, and the one below that is 50cps, and the one below that is 25cps, and now were down to the lower limits of human hearing, and we're only down three octaves. continue the pattern and it gets down to tiny little slices(or huge ones, if you think about it that way), where it takes millions of years just to oscillate once. pretty crazy. if that's not what you're asking, at least it helped me begin to fathom it!
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