Two-way audio is standard on most consumer security cameras these days. Most people try it once, talk to their dog through ...

The key ingredients for a fire are heat, fuel and oxygen; take one of these away, and the flames are extinguished. Sound ...

Acoustic signals have been important markers during NASA's Mars missions. Measurements of sound can provide information both ...

Acoustic waves are best known as the invisible delivery agents bringing voices, car horns, or our favorite song to our ears. But the waves can also move physical objects, like an item vibrating atop a ...