Researchers have been looking for ways to decompose sound into its basic ingredients for more than 200 years. In the 1820s, French scientist Joseph Fourier proposed that any signal, including sounds, ...

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It’s a question I’m sure was keeping you up at night: can you make an object spin with a sound wave? The answer, generally speaking, used to be no. Now, though, mechanical engineers have taken a look ...

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. Water, ...