There are twenty recognized isotopes of sodium, ranging from 18 Na to 37 Na and two isomers (22m Na and 24m Na). 23 Na is the only stable (and the only primordial) isotope. As such, it is cons...
Methane conversion o higher hydrocarbons
A densitometer is a device that measures the degree of darkness (the optical density) of a photographic or semitransparent material or of a reflecting surface.[1] The densitometer is basically a li...
Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide, as well as organic semicondu...
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves.[1] Interferometry is an important investigative t...
Therapeutic respiratory apparatus
lonidine (trade names Catapres, Kapvay, Nexiclon, Clophelin, and others) is a sympatholytic medication used to treat high blood pressure, attention-deficit/hyperactivity disorder, anxiety disorders...
Intelligent vehicle-highway system
Atomic emission spectroscopy (AES) is a method of chemical analysis that uses the intensity of light emitted from a flame, plasma, arc, or spark at a particular wavelength to determine the quantity...
Capillary electrophoresis (CE) is a family of electrokinetic separation methods performed in submillimeter capillaries and in micro- and nanofluidic channels. Very often, CE refers to capillary zon...
Transdermal delivery of narcotic analgesic
Silicon tactile imaging array
A lens is a transmissive optical device which affects the focusing of a light beam through refraction. A simple lens consists of a single piece of material, while a compound lens consists of severa...
A scintillation counter is an instrument for detecting and measuring ionizing radiation. It consists of a scintillator which generates photons of light in response to incident radiation, a sensi...
Optoelectronic pattern comparison
Location of scintillation event position
Therapeutic radiation applicator
Liquid ionization chamber imager/dosimeter
Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst.[1] With a catalyst, reactions occur faster and with less energy. ...
Compton scattering is the inelastic scattering of a photon by a quasi-free charged particle, usually an electron. It results in a decrease in energy (increase in wavelength) of the photon (which ma...
