Negative refraction of elastic waves has been studied and experimentally demonstrated in three- and two-dimensional phononic crystals, but Bragg scattering is impractical for low-frequency wave ...

sound waves cause air particles to vibrate back and forth; ripples cause water particles to vibrate up and down. A longitudinal wave is one in which the vibrations of the particles are parallel to the ...

Can you imagine sound travels in the same way as light does? A research team at City University of Hong Kong (CityU) discovered a new type of sound wave: the airborne sound wave vibrates transversely ...

Types of Waves: In Physics, waves are a fundamental phenomena that describes the transmission of energy and information through a medium of an empty space. These waves are characterised by their ...

Earthquakes release waves of energy called seismic waves. They travel through the interior and near the surface of the Earth. P-waves, or primary waves, are the fastest moving type of wave and the ...

Waves transfer energy from one place to another. Light from the Sun travels through space and through the atmosphere, transferring energy to the Earth and other planets. Sound travels from a ...

Michael Hall receives funding from the Australian Research Council and the Foundational Questions Institute. We see them at the beach. They’re behind every sound and light show and the miracle of ...

An earthquake generates a series of seismic waves that travel through the interior or near the surface of the Earth. There are four types of seismic waves. How will three identically engineered ...