The Ancients Knew the Power of Sound We are Only Discovering Now

[ArMaP]

If the air displaced just from vibrating a guitar string is all that creates sound, then sound would not travel through walls.

In the same way the guitar string makes air vibrate, air vibrating makes the wall vibrate. The wall vibrating makes the air on the other side vibrate.
But if the wall is very rigid and thick it will react less to the vibration, so the sound we ear on the other side of the wall is lower.

Both the medium and the vibrating string together create sound.

Exactly. The string starts the vibration and medium propagates it, that's why there's no sound in a vacuum.

So, while sound (the result of the vibration) doesn't have mass, the medium does.

[andy06shake]

I think it is you who should stand corrected this time.

Then elucidate please...

To my mind, your explanation is backwards because you're treating the pressure wave as if it is a separate thing that appears first and then makes the air and wall move.

A sound wave is a pattern of movement through a medium.

Not an invisible object travelling around by itself.

The string, air, and wall are all parts of the same energy transfer process...
 

Reminds me of that nursery rhyme where the big bad wolf couldn’t blow down the little piggies house made of brick.

Exactly, but the Wolf had the physics wrong. 

[ArMaP]

Again, just think of it intuitively, if the air displaced just from vibrating strings is all that creates sound, then sound would not be powerful enough to go through walls.

You have to remember that the medium is all around the wall, so a change in pressure in the medium affects (not much, but it does) the wall, as it affects everything around the source of the vibration.

You can see this if you move a hand in small room with something like a towel, for example, hanging from a support, the movement of your hand makes the towel move at the same rhythm.

Reminds me of that nursery rhyme where the big bad wolf couldn’t blow down the little piggies house made of brick.

If the big bad wolf knew the resonance frequency of the brick house he could destroy it, but he didn't know science.

[MonkMode]

Then elucidate please...

To my mind, your explanation is backwards because you're treating the pressure wave as if it is a separate thing that appears first and then makes the air and wall move.

A sound wave is a pattern of movement through a medium.

Not an invisible object travelling around by itself.

The string, air, and wall are all parts of the same energy transfer process...
 

Exactly, but the Wolf had the physics wrong. 

I thought I was pretty clear, at least for somebody flying by the seat of his pants…

I am treating the pressure wave (sound wave) as a different component than the air and wall. 

The combination of the medium and vibrating string is what makes the sound wave.

And actually, I found some research asserting sound waves have negative mass, which should probably be stated, to be more clear than saying, sound has no mass.

[andy06shake]

I thought I was pretty clear, at least for somebody flying by the seat of his pants…

I am treating the pressure wave (sound wave) as a different component than the air and wall. 

The combination of the medium and vibrating string is what makes the sound wave.

And actually, I found some research asserting sound waves have negative mass, which should probably be stated, to be more clear than saying, sound has no mass.

You're making it sound like the sound wave is a little invisible ghost travelling through the air, separate from the stuff doing the moving. 

It isn't.

A sound wave is the vibration of particles in the medium.

The air, string, and wall are not separate from the process, they are the process.

As to "Negative mass."

Does that not apply to the likes of exotic particles or material?

Not sound having a mysterious anti-weight...

I don't quite understand that part or how it's relevant.

[chr0naut]

So sound with no mass is moving a wall, and moving air on the other side of the wall.

The air has mass {1.225 kg/m³ at a temperature of 15 °C (59 °F) and standard atmospheric pressure. This means that in one cubic meter of air, there is about 1.225 kilograms of mass} and the wall has mass. Sound is a pressure wave moving elastically through those masses. If you took away those vibrating masses (like in the vacuum of space), there would be no transmission of sound.

Sound co-opts the mass, pressure, and self-attractive forces of the medium in which it travels, creating pressure differentials and therefore 'forces' between the peaks and troughs of those pressure differentials.

You still can’t answer why something with no mass can move walls and air which do have mass.

If you remove the masses of the air and other media, there is no sound. Sound is a function of the way those masses can be moved. It isn't separate.

So the paradox of sound is still unsolved.

The paradox applies to more than just acoustic levitation, but acoustic levitation is the best hint to solve the paradox of sound.

There isn't any paradox of sound.

What appears to be happening is 'magical thinking', which looses simplicity in a haze of various complexities and that disconnects your conception of sound from the physicality in which it has been observed (and without which, sound does not happen).

This misconception is actually quite reasonable, because sound is one of many things that are normally invisible to us, and so when people try and describe these things, they use all sorts of metaphors and allegories. Unfortunately, this often leads people to a belief that the 'explanation' is actually what is occurring.

Paradoxically, further abstraction in the form of mathematically and metrically describing sound, usually leads to a clarification of the true nature of the invisible subject.

I would suggest that you review the subject of simple harmonic motion to inform and clarify your understanding of the true nature of sound.

[MonkMode]

You're making it sound like the sound wave is a little invisible ghost travelling through the air, separate from the stuff doing the moving. 

It isn't.

A sound wave is the vibration of particles in the medium.

The air, string, and wall are not separate from the process, they are the process.

As to "Negative mass."

Does that not apply to the likes of exotic particles or material?

Not sound having a mysterious anti-weight...

I don't quite understand that part or how it's relevant.

The air being moved is not the primary driver of sound.  The medium is beyond air.

Radio waves still move through space, even if they cannot make a sound that is heard by an ear.  The medium is still relevant in space and there can be sound waves in space.

Again, the sound wave (vibration & medium) is what causes air to move and make sound that is heard.  The air is not separate, it is part of what makes heard sound, but it is a different component than the vibration & medium.

The medium has positive mass, and the sound wave has negative mass.  The negative mass is what drives acoustic levitation, not air forces.

[quintessentone]

The following is more my opinions and my understandings, as I believe I  have learned them.


Learn it, recognize it, and utilize it for your own liberation and prosperity.

Hey OP, what have you learned?

Hey OP. what do you recognize?

Liberation takes a lot of work, tell us of your efforts.

[ArMaP]

Radio waves still move through space, even if they cannot make a sound that is heard by an ear.  The medium is still relevant in space and there can be sound waves in space.

Because they are a completely different thing.

Again, the sound wave (vibration & medium) is what causes air to move and make sound that is heard.  The air is not separate, it is part of what makes heard sound, but it is a different component than the vibration & medium.

For us humans, in most situations, the medium is the air. If you are under water, the medium is the water. If you put your ear against an object then the object is the medium.

[andy06shake]

The air being moved is not the primary driver of sound.  The medium is beyond air.

Radio waves still move through space, even if they cannot make a sound that is heard by an ear.  The medium is still relevant in space and there can be sound waves in space.

Again, the sound wave (vibration & medium) is what causes air to move and make sound that is heard.  The air is not separate, it is part of what makes heard sound, but it is a different component than the vibration & medium.

The medium has positive mass, and the sound wave has negative mass.  The negative mass is what drives acoustic levitation, not air forces.

It's already been explained to you that radio waves are electromagnetic, not sound, and they travel through space because they don't need a material medium.

Sound does.

And a sound wave isn't separate from the medium.

It's the medium vibrating, in this case air.

And "negative mass" in specialised physics doesn't explain everyday acoustics or acoustic levitation.

Else again im sure you will be able to elucidate...