balance galvanometer

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• Galvanometer — D Arsonval/Weston galvanometer movement with the moving coil shown in red. A galvanometer is a type of ammeter: an instrument for detecting and measuring electric current. It is an analog electromechanical transducer that produces a rotary… …   Wikipedia

• galvanometer — /gal veuh nom i teuhr/, n. an instrument for detecting the existence of small electric currents and determining their strength. [1795 1805; GALVANO + METER] * * * Instrument for measuring small electric currents by deflection of a moving coil. A… …   Universalium

• History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… …   Wikipedia

• watch — /woch/, v.i. 1. to be alertly on the lookout, look attentively, or observe, as to see what comes, is done, or happens: to watch while an experiment is performed. 2. to look or wait attentively and expectantly (usually fol. by for): to watch for a …   Universalium

• William Thomson, 1st Baron Kelvin — Infobox Scientist box width = 300px name = Lord Kelvin image width = 300px caption = William Thomson, 1st Baron Kelvin (1824 1907) birth date = birth date|1824|6|26|df=y birth place = Belfast, Co. Antrim, Northern Ireland death date = death date… …   Wikipedia

• Potentiometer (measuring instrument) — A potentiometer is an instrument for measuring the potential (voltage) in a circuit. Before the introduction of the moving coil and digital volt meters, potentiometers were used in measuring voltage, hence the meter part of their name. The method …   Wikipedia

• Wheatstone bridge — A Wheatstone bridge is a measuring instrument invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843. It is used to measure an unknown electrical resistance by balancing two legs of a bridge… …   Wikipedia

• Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …   Wikipedia

• instrument — Synonyms and related words: Bourdon tube, Charlie McCarthy, Danish balance, Federal, Gramophone, Gyropilot, Mach meter, Roman balance, Teletype, Weightometer, X ray machine, absolute altimeter, accelerometer, adapt, aerial reconnaissance camera,… …   Moby Thesaurus

• Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea …   Wikipedia

• Bridge circuit — A bridge circuit is a type of electrical circuit in which the current in a conductor splits into two parallel paths and then recombines into a single conductor, thereby enclosing a loop. It was originally used for measurement purposes, but can… …   Wikipedia