The document provides an overview of magnetism and electromagnetism. It defines magnetism and different types of magnets. It discusses the earth's magnetic field and historical discoveries related to magnetism. Key concepts covered include electromagnetic induction, electromagnets, magnetic properties and permeability. Examples are given of common uses of magnetism such as in motors, generators, relays, solenoids, speakers and data storage devices.

1. Magnetism Resources: Grob: Basic Electronics Textbook: Chapter 14 http://www.coolmagnetman.com/magindex.htm http://www.sayedsaad.com/fundmental/3_Basic%20AC%20Generation.htm http://micro.magnet.fsu.edu/electromag/java/index.html http://www.regentsprep.org/Regents/physics/phys03/dinduction/default.htm http://www.exploratorium.edu/snacks/iconmagnetism.html http://www.school-for-champions.com/science/magnetism.htm

10. Permeability

11. Electromagnetism: The Catalyst For Technological Invention and Innovation Hans Oersted Revolutionary War Abraham 2000 BC Moses 1400 BC Isaiah 800 BC Jesus and Apostles Constantine 300 AD Gutenberg 1400 AD Watt 1765 AD Volta / Galvani 1800 AD Dark Ages Columbus 1492 AD Transportation (mph) Communication Information Management

13. Electromagnets

14. Effect of Oersted’s Discovery Oersted’s discovery was In the Spring of 1820 Hans Oersted Computers Fax Machines Cell Phones CD’s / DVD’s Internet Edison: Light Bulb 1879 Ampere: Electrodynamics 1821BC Faraday Electromagnetism 1821 Wright Bros Air Flight 1903 Benz: Automobile 1885 1890 Electric Power Available Bell Labs: Transistors 1947 Marconi: Radio 1896 Bell: Telephone 1876 Transportation (mph) Communication Information Management Farnsworth: TV 1927 Morse: Telegraph 1835