**Electrical History FactsProfessor A.Knowall**

Personalities |

Andree Marie Ampere 1775 - 1836 Lyon France Unit Amp Ampere - Electric Current - The SI and MKSA unit of current, defined as that which, flowing in two parallel conductors, each infinitely thin and long, one metre apart in a vacuum, will produce a force between the conductors of 2 x 10-7 newtons per metre length Biography |

Charles Augustin Coulomb 1736-1806 France Unit Coulomb Electric Charge -Coulomb - The MKSA and SI unit of electric charge (static or as a current), equal to the quantity of electricity transferred by one ampere in one second Biography |

> Colonel Crompton 1845-1940 England Innovator Engineer - Crompton was founded by a legendary figure, Colonel Crompton, who was one of the most remarkable of the founding pioneers of the British electrical industry. Biography |

Sir Humphry Davy 1778-1829 Penzance London Royal Institute Miners Lamp Biography |

Thomas Alva Edison 1847 - 1931 America Invention Phonograph 1877 Light Bulb Biography |

Michael Faraday 1791-1867 Royal Institution London Unit Farad The unit of Capacitance F = Farad Bio-1 ,Bio-2 ,Bio-3 ,Bio-4 ,Bio-5 Invention Electric Motor Dynamo - 1821 Discovery Benzene - 1825 Design Bunsen Burner - 1820's Discovery Electro Magnetic Induction - 1831 Discovery Invention Magneto Optical Effect - 1845 Discovery Diamagnetism - 1845 |

Sebastian Ziani de Ferranti 1864-1930 Liverpool England Innovator Engineer Biography |

John Ambrose Fleming 1849-1945 London Sidmouth England Left Hand Rule Biography |

Benjamin Franklin 1706 - 1790 America Lightning Conductor Biography |

Luigi Galvani 1737 - 1798 Bologna. Italy Animal Experiments 1780 Biography |

Johann Carl Friedrich Gauss 1777-1855 Duchy Brunswick Germany Gottingen Unit Gauss Gauss - The CGS unit of magnetic flux density Biography |

Joseph Henry 1797-1878 America Unit Henry "Henry - The unit of inductance, such that an electromotive force of one volt is induced in a circuit by current variation of one ampere per second Biography |

Heinrich Hertz 1857-1894 Berlin Bonn Germany Unit Hertz - The unit of frequency, that of a periodic phenomenon of which the periodic time is one second - sometimes called cycle per second in the UK. Biography |

James Prescott Joule 1818-1889 England Unit Joule - The unit of energy, work and heat in the MKS and SI systems, equal to work done when a force of 1 newton advances its point of application 1 metre (1 joule = 10 to the power of 7 ergs). Biography |

Guglielmo Marchese Marconi 1874-1937 Radio Biography |

James Clerk Maxwell 1831 - 1879 Edinburgh Cambridge London Unit Maxwell - The cgs unit of magnetic flux, equal to 10 ^{-8} weber Electricity Magnetism Equations - 1873 Biography |

Sir Isaac Newton 1642-1727 Cambridge England Principia - 1686 Unit Newton - The unit of force Biography_1 Biography_2 Biography_3 |

Hans Christian Oersted 1777 - 1850 Copenhagen Denmark Unit Oersted - The cgs unit of magnetic field strength. Discovery Electromagnetism - 1820 Biography |

George Simon Ohm 1787-1854 Germany Unit Electric Resistance Ohm - The unit of electrical resistance in the SI and the MKSA systems, the resistance in a conductor in which a potential difference of one volt produces a current of one ampere. Mho - formerly a unit of electric conductance, that of a body with a resistance of one ohm (now siemens) Biography |

Werner von Siemens 1816-1892 Berlin Germany London St.Petersburg Unit Siemen - The unit of electrical conductance (an SI additional unit; abbreviation S), the equivalent of mho and reciprocal of ohm. Bio - Werner von Siemens Bio - Sir William Siemens Bio - Carl von Siemens |

Joseph Wilson Swan 1828-1914 Sunderland Gateshead England 1879 Engineer Inventor - Light Bulb Biography |

Croatia America Unit Tesla - The unit of magnetic flux density, equal to 1 weber per sq metre Biography |

James Watt 1736-1819 Glasgow Scotland Birmingham England Unit Watt - The practical and MKS unit of power - equal to a rate of working of one joule per second Biography |

Wilhelm Eduard Weber 1804-1891 Wittenberg Gottingen Leipzig Germany Unit Weber - The MKS unit of magnetic flux. Biography |

Alessandro Giuseppe Antonio Anastasio Volta 1745 - 1827 Italy Unit EMF Volt - The MKSA and SI unit of electromotive force, electric potential, or potential difference, the difference of potential between two points in a conductor carrying a current of one ampere when the power dissipated between them is one watt. Voltaic Pile Biography |