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

[Astyanax]

The sound from banging a tuning fork or plucking a guitar string is going to travel much further than the air particles moved by the vibration of these instruments.

This is like wearing a T-shirt saying I DON'T KNOW WHAT I'M TALKING ABOUT.

[chr0naut]

Try again.

Sound does not have any mass.

So it cannot exert any pressure to push objects up.

Why then, can it levitate objects?

Acoustic levitation is created by the inertia against the vibrational movements of very light objects, trapped in the null points in very energetic resonant standing waves.

It is the same principle demonstrated in cymatics, where sound waves produce patterns in fine particles.

Acoustic levitation doesn't move objects very far, or particularly lift them up. It just holds them in place according to the balance between inertial forces, and those of harmonic oscillation.

[MonkMode]

This is like wearing a T-shirt saying I DON'T KNOW WHAT I'M TALKING ABOUT.

It is ok to admit it, if you can’t solve the acoustic levitation paradox.

I find it much more liberating to confess I don’t know, rather than bloviating like an AI bot being forced to sound plausibly correct.

I find it even more amusing to take a wild swing on a new theory too.

Here are a couple things I have come to know.

The sound of a guitar strumming can travel through walls, but the air particles being pushed by its vibrating strings, not so much.

Sound has no mass.

I hope I have not bloviated too much in meandering back to the same point, that the acoustic levitation paradox remains unsolved.

[chr0naut]

It is ok to admit it, if you can’t solve the acoustic levitation paradox.

I find it much more liberating to confess I don’t know, rather than bloviating like an AI bot being forced to sound plausibly correct.

I find it even more amusing to take a wild swing on a new theory too.

Here are a couple things I have come to know.

The sound of a guitar strumming can travel through walls, but the air particles being pushed by its vibrating strings, not so much.

Sound has no mass.

I hope I have not bloviated too much in meandering back to the same point, that the acoustic levitation paradox remains unsolved.

Sounds are oscillating pressure waves in some sort of media.

When the pressure wave hits a wall, it moves the wall, and therefore the sound wave 'passes' through the wall because the wall also vibrates the air molecules on the other side.

Acoustic levitation cannot move any object further than 1/2 the wavelength of the primary standing wave. The objects that you see in videos being levitated, are usually very carefully placed there.

[Astyanax]

It is ok to admit it, if you can’t solve the acoustic levitation paradox.

Who says I can’t? But Andy06shake and Chr0naut have already explained it in the thread, so I don’t see why you should try my patience as well as theirs.
 

I find it much more liberating to confess I don’t know, rather than bloviating like an AI bot being forced to sound plausibly correct.

Right, then. Here are some opportunities to liberate yourself.

• Rayleigh, ‘On the Pressure of Vibrations’ – Philosophical Magazine, (1902).
  
• Rayleigh, ‘On the Momentum & Pressure of Gaseous Vibrations & on the Connexion with the Virial Theorem’ – Philosophical Magazine (1905).
  
• King, L.V., ‘On the acoustic radiation pressure on spheres’, Proceedings of the Royal Society (1934)
  
• Rajabi, M., & Behzad, M, ‘Point Source Stimulated Acoustic Radiation of Cylindrical Shells: Resonance and Background Fields’ – Acta Acoustica (2014)
  

Or if the maths is too hard, you can try the consumer version here.

[andy06shake]

Sound has no mass to push an object up like you state.

I dont think you understand the physics.

Sound doesn't need mass to exert a force.

The sound waves carry energy and momentum through vibrating air molecules.

This creates the pressure, which exerts a measurable force on objects.

[andy06shake]

Of course there is evidence that Earth is ringing.  How do you think radio waves would work without a ringing Earth?  This also probably addresses ArMaP’s point more specifically, that acoustic levitation would not work higher than the ionosphere.

Now, since the Earth is obviously ringing, the hollow Bi-Bell in a Grindstone theory just makes the most intuitive sense.

Radio waves are electromagnetic, Monkmode, not kinetic, they travel through the vacuum of space without a "ringing Earth."

And as has been explained, acoustic levitation uses ultrasonic sound in air over centimetres, not global vibrations.

The technology is not really scalable because sound intensity and precise wave patterns grow dramatically with larger objects.

[ArMaP]

The sound from banging a tuning fork or plucking a guitar string is going to travel much further than the air particles moved by the vibration of these instruments.

Let's try it step by step.
Tell me if you agree with this: sound is what we ear.

[MonkMode]

Sounds are oscillating pressure waves in some sort of media.

When the pressure wave hits a wall, it moves the wall, and therefore the sound wave 'passes' through the wall because the wall also vibrates the air molecules on the other side.

Acoustic levitation cannot move any object further than 1/2 the wavelength of the primary standing wave. The objects that you see in videos being levitated, are usually very carefully placed there.

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

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

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.

[andy06shake]

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

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

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.

Personally i can't see the paradox.

Sounds not a massless object pushing matter.

It is a pressure wave carried by vibrating particles in a medium, in this instance air.

And it's the particles in the air, that have mass, hence transfer momentum to walls, making them vibrate.

The vibrating wall then moves the air beyond it.

This is established physics, MonkMode...