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Presentations:


= Electricity =


Magnets, Motors and Generators

Generating and Harnessing Electrical Energy


Our modern world depends on electricity for just about every aspect of life. This program will explore the discovery of electricity and electromagnetism using a number of simple experiments / demonstrations. From these demonstration we will see how electric Motors and Generators were developed, and then we will review the astounding array of uses these for which these two inventions are used. Finally we will touch on the nature of electricity as one part of the electromagnetic spectrum and how Light, Radio, Electricity and Magnetism are all related.

Scientific Principles

  • Electricity
    • Sources of Electricity
    • Electro-Chemical Reactions
    • Conduction
    • Induction
    • Current
  • Magnetism
    • Permanent
    • Electromagnets
  • E-M Spectrum
    • Electricity
    • Radio
    • Light


Program Outline

[ Seminar Format Ca. 45 minutes ]
[ Workshop Format Ca. 90 minutes ]
Workshop Format has more hands-on time for the participants

Electricity - Experiments and Inventions

  • 1600 - Gilbert term "electricus" in "De Magnete"
  • 1646 - Browne term "electricity"
  • 1663 - von Guericke, friction machine - static generator [Practical Demo]
  • 1729 - Gray, Conduction via Wire
  • 1745 - van Musschenbroek, the Leyden jar
  • 1752 - Franklin lightning = electicity
  • 1792 - Volta, Voltaic Pile / battery
  • 1820 - Oersted, Compass needle responds to electrified wire [Practical Demo]
  • 1820 - Ampere, Parallel wires attract/repulse due to polarity [Practical Demo]
  • 1827 - Jedlik, Electromagnetic Self-Rotor [Practical Demo]
  • 1831 - Faraday, the dynamo / generator
  • 1834 - Faraday, inductance [Practical Demo]
  • 1861 - Jedlik, Dynamo
  • 1866 - Wheatstone, Siemens & Varley, Each invent industrial generators
  • 1885 - Ferraris & Tesla, AC Motors
  • 1886 - Westinghouse Industrial Alternator

We Will have more in-depth time discussing

  • Direct Current
  • Alternating Current
  • Resistance
  • Voltage

Discussions about the number and variety of products using motors and generators

Final discussion: the Electromagnetic Spectrum, how light, radio, electricity and magnetism are related.

Workshop Format will have Hands-On time working through stations with different models.




Page last modified on January 23, 2016, at 02:58 PM
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