Metamaterial sound proofing from materials less than an inch thick would be as good as 4 foot thick walls for soundproofing. People outside a metamaterial sound proofed room – no one will hear you ...

“THE works comprised in this series,” the editors tell us, “will all be composed with special reference to their use in school-teaching; but, at the same time, particular attention will be given to ...

In laboratories from Brazil to Munich, researchers are learning to grab matter with sound alone, sculpting ultrasonic waves into invisible “hands” that can lift, push, and rotate objects without a ...

We learn a lot about our surroundings thanks to sound. But... what is it exactly? In this episode of Crash Course Physics, Shini goes over some of the basics (and some of the not so basics) of the ...