Rainbows of sound are a reality thanks to a new device

A plastic structure separates white noise into pitches, offering a novel way to manipulate sound 

An illustration shows a rainbow of colors emanating from a circular acoustic device.

A specially designed device (illustrated at center) creates an acoustic rainbow, which splits sound (produced at the center of the device) into different pitches (colors).

R.E. Christiansen, E. Fernandez-Grande and O. Sigmund/Science Advances 2025

No rainstorm is needed for this rainbow — it’s made out of sound.