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#31 | |
diyAudio Member
Join Date: Aug 2019
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Quote:
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#32 |
diyAudio Member
Join Date: May 2010
Location: Skokie Il
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#33 |
diyAudio Member
Join Date: May 2010
Location: Skokie Il
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Back on topic...
The mediums sound travels through have mass. Technologies exploit this. The mass of air in a speaker cabinet or port is part of the equations used to design speaker cabinets, is it not? Hypothetical models are interesting if they eventually help us explain stuff. I think the jury is still out on "negative gravity" etc. |
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#34 |
diyAudio Member
Join Date: Apr 2018
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Researchers suggest that empirical support for the 'sound has mass' hypothesis may be obtained by monitoring earthquakes.
An earthquake generates powerful sound waves which travel through the Earth's crust, and the mass associated with them may register on sensitive gravimeters. These sound waves could have a mass as large as 100 billion kilograms associated with them! |
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#35 | |
diyAudio Member
Join Date: May 2010
Location: Skokie Il
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Quote:
Again, the medium propagating the sound has mass. Sound by definition is the periodic oscillation of said medium. Mass in motion possesses the property of momentum. In the case of the earth's crust, that momentum is very large. Momentum can impart a force on another object (think pool balls). In the case of earthquakes, very large forces are imparted on objects. We all know the results. There is no sound without a medium. Sound does not propagate through space. |
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#36 | ||
diyAudio Member
Join Date: Apr 2018
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Quote:
![]() The new, as yet unproven, theory postulates that sound waves carry a small amount of mass with them as they travel through a medium. The mass to which the researchers refer is not related to the mass of the medium itself. Physics - Focus: Sound Waves Carry Mass Quote:
Last edited by Galu; 12th October 2019 at 07:15 PM. |
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#37 |
diyAudio Member
Join Date: May 2010
Location: Skokie Il
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I understand that this is how we find stuff out.
Treating sound as a particle may have some explanatory power. Time will tell. |
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#38 |
diyAudio Member
Join Date: Apr 2018
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Time will tell indeed!
For now, I'm happy to agree that sound energy is transferred via the to and fro molecular vibrations which produce a longitudinal wave! ![]() |
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