Physics

Regenerative cooling is a method of cooling gas, utilizing the rapid expansion of a compressed portion of the gas, before it becomes liquid, to cool…

A cryocooler is a device used to cool the environment and anything inside it to extremely cold temperatures. A refrigerator designed to reach cryogenic temperatures…

A humidifier is a device, primarily an electrical appliance, that increases humidity in a single room or an entire building. They are devices that emit…

The photoacoustic effect or optoacoustic effect is the formation of sound waves following light absorption in a material sample. It relies on the differential thermoelastic…

Thermoacoustics is the interaction between temperature, density, and pressure variations of acoustic waves.  It is the study of phenomena influenced by thermodynamics and acoustics. Thermoacoustic…

Thermoelectric cooling is a fascinating technology, and it definitely has its place when it comes to wine coolers and humidors. This technology has many advantages…

Solar chimneys are a form of passive building design. A solar chimney – often referred to as a thermal chimney – is a way of…

A solar still is a green energy product that uses the natural energy of the sun to purify water. A solar still distills water with…

Atmospheric water generators (AWGs) have been available to consumers since the turn of the century. It is a device that extracts water from humid ambient…

Laser absorption spectrometry (LAS) refers to techniques that use lasers to assess the concentration or amount of a species in the gas phase by absorption…

Ionization is the process in which an atom or a molecule gains or loses electrons to form a charged ion. It is the process by…

Photoionization is the physical process in which an ion is formed from the interaction of a photon with an atom or molecule. This ionization produced…