The researchers applied the higher resonant radio frequency ... s pure motion — a sloshing back and forth, similar to sound waves. “For the first time, we can take pictures of this substance ...

THE recent discovery of solar radio noise, in the range 30-1,000 megacycles ... will produce electromagnetic radiations the maximum wave-lengths of which are comparable to stellar dimensions.

The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall strength, of the signal is varied to incorporate the sound information. With FM ...

By containing the sound wave on the surface of a chip ... defense systems and even radio astronomy. More information: Govert ...

Scientists have unlocked a previously unseen behavior of acoustic waves, opening up new possibilities for cutting-edge ...

By measuring the speed of sound we can apply the wave equation ... This spectrum includes visible light, X-rays and radio waves. Electromagnetic radiation can be useful as well as hazardous.

For water waves and sound waves the unit hertz is usually good enough but radio and TV waves have such a high frequency that the kilohertz (\(kHz\)) or even the megahertz (\(MHz\)) are better units.