electrode distance
81PHOTOGRAPHIE — La perception de l’apparence du monde matériel par notre organe visuel a comme support la lumière visible ou les autres radiations électromagnétiques, rendues visibles par l’intermédiaire de phénomènes auxiliaires. L’emploi direct de l’ensemble… …
82PLASMAS — Le terme «plasma» a été introduit en physique en 1923 par les physiciens américains Irving Langmuir et Levi Tonks pour désigner, dans les tubes à décharge (cf. état GAZEUX), certaines régions équipotentielles contenant un gaz ionisé… …
83Earth battery — An Earth battery is composed of a pair of electrodes made of two dissimilar metals, such as iron and copper, which are buried in the soil or immersed in the sea. A device that is placed in water is labeled a sea battery . It can act as a receiver …
84Transmission tower — A delta pylon carrying a 400kV power line towards Madrid. A transmission tower (colloquially termed an electricity pylon in the United Kingdom and parts of Europe, an ironman in Australia, and a hydro tower in parts of Canada) is a tall structure …
85Trigatron — A trigatron is a type of triggerable spark gap switch designed for high current and high voltage, (usually 10 100 kV and 20 100 kA, though devices in the megaampere range exist as well). It has a very simple construction and in many cases is the… …
86Twin carbon arc welding — Unlike single carbon arc welding, in twin carbon arc welding the arc is maintained between two carbon electrodes held in a special holder. Current is switched on and by operating the mechanism of arc length adjustment the two electrodes are… …
87Electrochemistry — is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte), and which involve electron transfer between… …
88Voltage clamp — The voltage clamp is used by electrophysiologists to measure the ion currents across a neuronal membrane while holding the membrane voltage at a set level. Neuronal membranes contain many different kinds of ion channels, some of which are voltage …
89ÉLECTROCHIMIE ET ÉLECTROLYSE — L’électrochimie décrit les relations mutuelles de la chimie et de l’électricité ou, mieux, des phénomènes couplés à des échanges d’énergie électrique. Ainsi, la presque totalité de la chimie, du fait de l’importance de la distribution et de la… …
90gap — [1] The distance between the center terminal (electrode) and the outer terminal (electrode) through which the spark must travel in a spark plug. Also see spark plug gap air gap. [2] The distance between the points in contact breaker points. See… …
