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Georg Simon Ohm (/ oʊ m /; [1] German: [ˈɡeːɔʁk ˈʔoːm]; [2] [3] 16 March 1789 – 6 July 1854) was a German mathematician and physicist. As a school teacher, Ohm began his research with the new electrochemical cell , invented by Italian scientist Alessandro Volta .
Ohm's Law (1827): Published by Georg Simon Ohm in 1827, Ohm's law established the relationship between voltage, current, and resistance, paving the way for more precise electrical measurements. Wheatstone Bridge (1833, 1843): The Wheatstone bridge , invented by Samuel Hunter Christie in 1833 and popularized/improved by Sir Charles Wheatstone in ...
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where E is the electric field vector with units of volts per meter (analogous to V of Ohm's law which has units of volts), J is the current density vector with units of amperes per unit area (analogous to I of Ohm's law which has units of amperes), and ρ "rho" is the resistivity with units of ohm·meters (analogous to R of Ohm's law which has ...
One of the functions of many types of multimeters is the measurement of resistance in ohms.. The ohm is defined as an electrical resistance between two points of a conductor when a constant potential difference of one volt (V), applied to these points, produces in the conductor a current of one ampere (A), the conductor not being the seat of any electromotive force.
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Electric charge: faraday (F) Jean Léonard Marie Poiseuille: 1797–1869 French Dynamic viscosity: poise (P) Anders Jonas Ångström: 1814–1874 Swedish: Length: angstrom (Å) Sir George Stokes, 1st Baronet: 1818–1903 British Kinematic viscosity: stokes (St) William John Macquorn Rankine: 1820–1872 British (Scottish) Thermodynamic ...
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