It's amazing what they can do with things you cannot see or hear...

It's amazing what they can do with things you cannot see or hear

Acoustic levitation uses sound traveling through a fluid — usually a gas — to balance the force of gravity. On Earth, this can cause objects and materials to hover unsupported in the air. In space, it can hold objects steady so they don't move or drift. The process relies on the properties of sound waves, especially intense sound waves.

https://science.howstuffworks.com/a...tion uses sound traveling,don't move or drift.