joule-thomson effect
61Electricity — (from the Greek word ήλεκτρον, (elektron), meaning amber, and finally from New Latin ēlectricus , amber like ) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many… …
62Thermoelectricity — (thermo electricity) refers to a class of phenomena in which a temperature difference creates an electric potential or an electric potential creates a temperature difference. In modern technical usage, the term almost always refers collectively… …
63Liquid hydrogen — (LH2 or LH2) is the liquid state of the element hydrogen. It is a common liquid rocket fuel for rocket applications. Hydrogen is found naturally in the molecular H2 form.To exist as a liquid, H2 must be pressurized and cooled to a very low… …
64Timeline of low-temperature technology — and cryogenic technology (Refrigeration down to (–150 °C, –238 °F or 123 K) and cryogenics [ [http://www.springerlink.com/content/k468837771683266/ Low temperature technology] ] Timeline1000s* 1000s Avicenna invented the refrigerated coil, which… …
65atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …
66Efecto Termoeléctrico — Saltar a navegación, búsqueda Esta página es acerca del efecto termoeléctrico como fenómeno físico. Para aplicaciones del efecto termoeléctrico, ver termoelectricidad. El efecto termoeléctrico es la conversión directa de la diferencia de… …
67physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
68Thermodynamic temperature — is the absolute measure of temperature and is one of the principal parameters of thermodynamics. Thermodynamic temperature is an “absolute” scale because it is the measure of the fundamental property underlying temperature: its null or zero point …
69Effet thermoélectrique — Thermoélectricité Découvert puis compris au cours du XIXe siècle grâce aux travaux de Seebeck, Peltier ou encore Lord Kelvin, l effet thermoélectrique est un phénomène physique présent dans certains matériaux : il y lie le flux de… …
70Thermoelectricite — Thermoélectricité Découvert puis compris au cours du XIXe siècle grâce aux travaux de Seebeck, Peltier ou encore Lord Kelvin, l effet thermoélectrique est un phénomène physique présent dans certains matériaux : il y lie le flux de… …
