anode current variation

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• Birkeland current — Schmatic of the Birkeland or Field Aligned Currents and the ionospheric current systems they connect to.[1] A Birkeland current is a set of currents which flow along geomagnetic field line connecting the Earth’s magnetosphere to the Earth s hi …   Wikipedia

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• Control grid — The control grid is an electrode used in thermionic valves (vacuum tubes) used to modulate the flow of electrons in the cathode to anode or plate circuit. Contents 1 Operation 2 Construction 3 Effects of grid position …   Wikipedia

• List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …   Wikipedia

• Hullzelle — Skizze einer Hull Zelle. Eine Hull Zelle ist eine standardisierte, auf Labormaßstab verkleinerte Galvanisieranlage (benannt nach R. O. Hull). Sie besteht aus einem trapezförmigen Behälter aus nichtleitendem Material, in dem die Elektroden so… …   Deutsch Wikipedia

• Work function — In solid state physics, the work function is the minimum energy (usually measured in electron volts) needed to remove an electron from a solid to a point immediately outside the solid surface (or energy needed to move an electron from the Fermi… …   Wikipedia

• Hull-Zelle — Skizze einer Hull Zelle. Eine Hull Zelle ist eine standardisierte, auf Labormaßstab verkleinerte Galvanisieranlage (benannt nach R. O. Hull). Sie besteht aus einem trapezförmigen Behälter aus nichtleitendem Material, in dem die Elektroden so… …   Deutsch Wikipedia

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• radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining …   Universalium

• electrochemical reaction — ▪ chemistry Introduction       any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances one a solid and the other a liquid.       Under ordinary… …   Universalium