Galvanometer
Galvanometer
Galvanometer (/ɡælvəˈnɒmɪtər/) is a scientific instrument used for detecting and measuring electric current. The term is derived from the Italian scientist Luigi Galvani, who conducted extensive research on bioelectricity.
Definition
A Galvanometer is an electromechanical instrument used for detecting and indicating an electric current. A galvanometer works by the principle of electromagnetic deflection, where a coil suspended within a magnetic field will rotate when an electric current is passed through it, and this rotation is proportional to the current.
History
The Galvanometer was named after the Italian scientist Luigi Galvani, who in 1791 discovered the principle of electromagnetic deflection. This principle was later used by Johann Schweigger at the University of Halle, Germany, to develop the first known galvanometer in 1820.
Types of Galvanometers
There are several types of galvanometers, including the Tangent Galvanometer, Astatic Galvanometer, and Ballistic Galvanometer. Each type has its own specific use and application in various fields such as physics, engineering, and medicine.
Applications
Galvanometers have a wide range of applications. They are used in equipment such as ammeters for measuring current, voltmeters for measuring electric potential difference, and ohmmeters for measuring resistance. In the medical field, galvanometers are used in electrocardiograms to detect and measure the electric activity of the heart.
Related Terms
External links
- Medical encyclopedia article on Galvanometer
- Wikipedia's article - Galvanometer
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