Is sound Energy or a force?

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Dear reader,

Is sound Energy or a force? I am confused.:smile:
 
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Sound itself is a wave.
Actually, it is a wave that needs a medium to go through (unlike Electromagnetic waves).
Now the wave itself carries energy, since the wave is movement of the atoms/molecules making up the medium.
And when one atom moves the one next to it, you have a force (normally, the transportation of energy involves forces between the objects/atoms/molecules/particles in which the energy is moving).
 

eNtRopY

Sound is a mechanical wave; therefore, its fundmental unit is a phonon. Phonons like photons are a form of energy. Sound is energy.

eNtRopY
 
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yeah but is sound energy (like how light is energy)?



how are sound and light waves different? what makes 'em different?
 

eNtRopY

Originally posted by brum
yeah but is sound energy (like how light is energy)?



how are sound and light waves different? what makes 'em different?
Sound requires a mechanical medium. It is a wave packet of energy in the form of physically displaced medium. In other words it requires something to vibrate. Without a medium, like air or metal or some other material, sound does not exist.

Light requires no medium. It is a wave packet of energy in the form of oscillating electric and magnetic field.

eNtRopY
 

FZ+

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Sound is basically a way in which kinetic energy is transmitted by compressional waves. It isn't "energy" exactly, but rather a transfer of energy. It is generally thought that EVERYTHING contains energy. Perhaps even empty space is filled with energy.

Light is composed of photons, which are wavepackets. This is a case of a transverse wave of force fields propagating each other, rather than "things" moving and vibrating. Hence it's generally apt to consider photons as quanta of pure energy.
 

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