Physics

The reduction of sound energy as it propagates through a medium is referred to as acoustic attenuation. Sound wave attenuation can occur due to a…

A thermionic converter is made up of a hot electrode that thermionically emits electrons to a cooler electrode, producing useful electric power output. Caesium vapor…

Acoustic dispersion is the phenomenon in which the speed of sound waves through a medium varies with frequency. In other words, different frequencies of sound…

An acoustic metamaterial is a material that is designed to control and manipulate the propagation of sound waves. It is a man-made material with unique…

Acoustic waves are a type of energy propagation method that uses adiabatic loading and unloading to move through a medium. Acoustic pressure, particle velocity, particle…

In physics, a transverse wave is one whose oscillations are perpendicular to the wave’s advance direction. This is in contrast to a longitudinal wave, which…

A thermoelectric generator (TEG), also known as a Seebeck generator, is a solid-state device that directly converts heat flux (temperature differences) into electrical energy via…

Longitudinal waves are a type of wave that occurs when particles in a medium vibrate back and forth in the same direction as the wave.…

Rayleigh waves are a type of surface wave that propagates along the surface of a solid or fluid medium, such as the ground. They are…

Magnetic reconnection, a perplexing phenomenon, causes explosive occurrences throughout the universe, causing solar flares and space storms that can disrupt cell phone service and electrical…

A surface acoustic wave (SAW) is a type of sound wave that travels along the surface of a solid material. It is an acoustic wave…

Picosecond ultrasonics is a technique for creating and detecting ultrashort wavelength acoustic waves in the picosecond time domain. It is a non-destructive method for studying…