cathode reduction

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• Reduction potential — (also known as redox potential, oxidation / reduction potential, ORP or Eh) is a measure of the tendency of a chemical species to acquire electrons and thereby be reduced. Reduction potential is measured in volts (V), or millivolts (mV). Each… …   Wikipedia

• Cathode — Diagram of a copper cathode in a galvanic cell (e.g., a battery). A positive current i flows out of the cathode (CCD mnemonic: Cathode Current Departs). A cathode is an electrode through which electric current flows out of a polarized electrical… …   Wikipedia

• Cathode — Sur les autres projets Wikimedia : « Cathode », sur le Wiktionnaire (dictionnaire universel) La cathode[1] d un appareil passif parcouru par un courant continu est l électrode d où, en courant conventionnel, sort le courant (en… …   Wikipédia en Français

• Réduction électrolytique de l'aluminium — Production de l aluminium par électrolyse La réduction électrolytique de l aluminium est le procédé qui permet de fabriquer le métal aluminium à partir de l alumine extraite de la bauxite. Le procédé a été inventé simultanément par Paul Héroult… …   Wikipédia en Français

• Cathode bias — In order for a vacuum tube (or valve) to operate in a fairly linear region of its characteristic curve, the grid element must be maintained at a bias voltage more negative than the cathode. This is called cathode bias.Early techniquesEarly… …   Wikipedia

• cathode — /kath ohd/, n. 1. the electrode or terminal by which current leaves an electrolytic cell, voltaic cell, battery, etc. 2. the positive terminal of a voltaic cell or battery. 3. the negative terminal, electrode, or element of an electron tube or… …   Universalium

• reduction potential — noun : the potential at which reduction occurs at the cathode in an electrochemical cell compare oxidation reduction potential * * * Physical Chem. (in a galvanic cell) the potential of the electrode at which reduction occurs. Cf. oxidation… …   Useful english dictionary

• cathode — The negative pole of a galvanic battery or the electrode connected with it; the electrode toward which positively charged ions (cations) migrate and are reduced, and into which electrons are fed from their source (anode or generator). Cf.:anode.… …   Medical dictionary

• cathode — noun Etymology: Greek kathodos way down, from kata + hodos way Date: 1834 1. the electrode of an electrochemical cell at which reduction occurs: a. the negative terminal of an electrolytic cell b. the positive …   New Collegiate Dictionary

• cathode — noun /ˈkæ.θoʊd/ a) the electrode of an electrochemical cell at which reduction occurs b) the electrode through which current flows out of a cell (the negative terminal of an electrolytic …   Wiktionary

• Cold cathode — This article is about light sources and indicators. For cold cathode ion sources, see Ion source. CCFL redirects here. For other uses, see CCFL (disambiguation). Cold cathode fluorescent lamp A cold cathode is a cathode used within nixie tubes,… …   Wikipedia