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電磁學歷史的報告 AVI 檔

電磁學歷史的報告 AVI 檔. 通訊一甲 B09622027 李忠憲. Early Investigations of Electricity and Magnetism. B.C. 600 Thelas (Greek) Math. Astr. & Phil. Amber = elektron (Greek) Electricity, electron, electronic Loadstone, found in Magnesia => Magnet, Magnetism. Fluff. Amber. Silk. L. S. L. S.

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電磁學歷史的報告 AVI 檔

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  1. 電磁學歷史的報告AVI檔 通訊一甲 B09622027 李忠憲

  2. Early Investigations of Electricity and Magnetism • B.C. 600 Thelas (Greek) • Math. Astr. & Phil. • Amber = elektron (Greek) • Electricity, electron, electronic • Loadstone, found in Magnesia => Magnet, Magnetism Fluff Amber Silk L. S. L. S.

  3. A. D. 1600 William Gilbert (English) • Systematic experiments of electrostatic effects • Recognized that the earth is a huge magnet • Principles of compass S N Earth

  4. 1752 Benjamin Franklin (American) • Established conservation of charge • Positive (glass) and Negative (hard rubber) charges were named. • Kite experiment Suggested the use of lightning rods to protect buildings

  5. 1785 Charles Augustin de Coulomb (French) Measured electric and magnetic forces Coulomb’s Law

  6. 1800 Alessandro Volta (Italian) • Invented voltaic cell (Chemical Battery) Constant Current Zinc Copper

  7. 1819 Hans Christian Oersted (Danish) • Discovered Electricity can produce Magnetism • E & M are related

  8. 1820 Andre Marie Ampere (French) Motor equation

  9. Three-pole DC Motor

  10. 1826 Georg Simon Ohm (German) • Formulated Ohm’s law • 1839 Contributions were recognized • 1843 Verified by Wheatstone (Wheatstone bridge)

  11. 1831 Michael Faraday (English) • Demonstrated that magnetism could produce electricity • Faraday’s law • Faraday’s experiment

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