Science > Physics > Low frequency sound can travel almost unimpeded from water into air
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Science > Physics |
| User: |
"Sam Wormley" |
| Date: |
24 Oct 2006 09:13:56 PM |
| Object: |
Low frequency sound can travel almost unimpeded from water into air |
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
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| User: "Jan Panteltje" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
25 Oct 2006 07:56:35 AM |
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On a sunny day (Wed, 25 Oct 2006 02:13:56 GMT) it happened Sam Wormley
<swormley1@mchsi.com> wrote in <ELz%g.251736$1i1.120014@attbi_s72>:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
Sometimes I wonder if _any_ of your convention views is worth the money spend
on eduction.
If you look at the water surface, and it is vibrating, the perfect diafragma,
in contact with air.
The propagation speed will speed change.
Wow, should have asked me 50 years ago.
Idiot group this is beginning to be.
No gravity waves, and there never will be, as I have the model, and you
only math.
Losers
Osamama
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| User: "Sam Wormley" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water intoair |
25 Oct 2006 08:13:28 AM |
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Jan Panteltje wrote:
No gravity waves, and there never will be, as I have the model, and you
only math.
A bit off topic in this thread, Jan, but why are you thinking that
gravity wave detection is bogus? What part of GTR are you having
trouble with?
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| User: "" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
24 Oct 2006 10:15:02 PM |
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Sam Wormley <swormley1@mchsi.com> wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
Perhaps we can solicit the observations of those who particapted in
submarine depth charge runs.
--
Jim Pennino
Remove .spam.sux to reply.
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| User: "Raymond Yohros" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
24 Oct 2006 11:33:36 PM |
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Sam Wormley wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
low freq soundwaves are so long they can go through massive walls
and travel long distances. high freq sound are tiny waves
so they get absorbed easy.
thats way when you aproach a party, the first thing you hear
is the bass.
regards
raymond
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| User: "Sam Wormley" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water intoair |
25 Oct 2006 12:11:45 AM |
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Raymond Yohros wrote:
Sam Wormley wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
low freq soundwaves are so long they can go through massive walls
and travel long distances. high freq sound are tiny waves
so they get absorbed easy.
thats way when you aproach a party, the first thing you hear
is the bass.
regards
raymond
You imply that acoustic attenuation (in a gas) is frequency dependent.
Is that due to scattering? absorption? dispersion?
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| User: "Raymond Yohros" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
25 Oct 2006 10:44:31 AM |
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Sam Wormley ha escrito:
Raymond Yohros wrote:
Sam Wormley wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
low freq soundwaves are so long they can go through massive walls
and travel long distances. high freq sound are tiny waves
so they get absorbed easy.
thats way when you aproach a party, the first thing you hear
is the bass.
regards
raymond
You imply that acoustic attenuation (in a gas) is frequency dependent.
Is that due to scattering? absorption? dispersion?
when soundwaves change from one medium to another, hi freq sound
has less chance to propagate. also, they travel shorter distances.
this also depends on the amplitude of the sound of curse.
in overal, sound conduction is better through solids and liquids
than through gas (contrary to light wich can travel in vacuum.)
regards
raymond
regards
ray
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| User: "Sam Wormley" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water intoair |
25 Oct 2006 11:10:15 AM |
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Raymond Yohros wrote:
Sam Wormley ha escrito:
Raymond Yohros wrote:
Sam Wormley wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
low freq soundwaves are so long they can go through massive walls
and travel long distances. high freq sound are tiny waves
so they get absorbed easy.
thats way when you aproach a party, the first thing you hear
is the bass.
regards
raymond
You imply that acoustic attenuation (in a gas) is frequency dependent.
Is that due to scattering? absorption? dispersion?
when soundwaves change from one medium to another, hi freq sound
has less chance to propagate. also, they travel shorter distances.
this also depends on the amplitude of the sound of curse.
in overal, sound conduction is better through solids and liquids
than through gas (contrary to light wich can travel in vacuum.)
regards
raymond
regards
ray
See: http://www.ndt-ed.org/EducationResources/CommunityCollege/Ultrasonics/CalibrationMeth/thompsongray.htm
And: "Acoustic Fields and Waves in Solids, Vol I & II" by B.A. Auld, 2nd edition
(February 1990), Krieger Publishing Company; ISBN: 089874783X
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| User: "Raymond Yohros" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
25 Oct 2006 03:02:17 PM |
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Sam Wormley ha escrito:
See: http://www.ndt-ed.org/EducationResources/CommunityCollege/Ultrasonics/CalibrationMeth/thompsongray.htm
And: "Acoustic Fields and Waves in Solids, Vol I & II" by B.A. Auld, 2nd edition
(February 1990), Krieger Publishing Company; ISBN: 089874783X
Thanks
you always find interesting Educational Resources
the level of detail in this paper is very usefulll
regards
ray
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| User: "Max" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
25 Oct 2006 09:43:34 AM |
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Sam Wormley wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
I'm not sure if I understand what's new about this. The U.S. and Russia
used Extreme Low Frequencies (ELF) to communicate with submarines for
years.
http://en.wikipedia.org/wiki/Communication_with_submarines
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| User: "Jan Panteltje" |
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| Title: Re: Low frequency sound can travel almost unimpeded from water into air |
25 Oct 2006 11:18:11 AM |
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On a sunny day (25 Oct 2006 07:43:34 -0700) it happened "Max"
<mgkelson@yahoo.com> wrote in
<1161787414.105050.118360@b28g2000cwb.googlegroups.com>:
Sam Wormley wrote:
Underwater sound breaks the surface (Oct 24)
http://physicsweb.org/article/news/10/10/14
Low frequency sound can travel almost unimpeded from water into air,
claims a theoretical physicist in the US. The results are in stark
contrast to the conventional view that the underwater world is largely
silent to those above water and could have important implications for
marine biology, climatology and geophysics (Phys Rev Lett 97 164301).
I'm not sure if I understand what's new about this. The U.S. and Russia
used Extreme Low Frequencies (ELF) to communicate with submarines for
years.
http://en.wikipedia.org/wiki/Communication_with_submarines
Those are EM waves thse are sound.
And (Wormhole) any kid sitting in the bathtub clapping 2 objects together
would have as _his_ 'view' that that generated a low frequency 'bump' sound.
Go try it.
Kill all mathemacrapians.
Osamama
Everybody try thinking for yourself for a change.
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| User: "tj Frazir" |
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| Title: Re: Low frequency sound can travel almost unimpeded from waterinto... |
24 Oct 2006 10:00:55 PM |
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Some fucking idiot he is.
He failed to predict what frequency it would be and ignores the speed
change allso changes frequency.
The fucking idiot must not understand the diferance between sound in
water and air as a speed.
Shure enouph sound will vibrate the water and the container and the
sound in the water can make noise in the air BUT this DUMBFUCK has a
screw loose.
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