Longitudinal waves are also known as compression waves, and that’s what sound waves are. There’s no perpendicular motion to these, rather, the wave moves in the same direction as the disturbance.

To get an idea of why making things spin with sound waves is difficult, picture a tube that holds a turbine. Normally, to make the turbine spin, a fluid would flow past the blades of the turbine.

How sound works To understand why there’s no sound in space, first consider how sound works. Sound is a wave of energy that moves through a solid, a liquid or a gas. Sound is a compression wave.

Music for your cells . The new research builds on a 2018 study by Kumeta and his team that found that sound waves can influence genes involved in bone formation and wound healing. “To ...

In a nutshell Sound waves can influence how cells behave, even affecting fat development. In lab experiments, exposing cells to common sound frequencies like a 440 Hz tone significantly altered ...

Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.