Roble Media
Roble Media: Science Experiment: Electromagnet
Investigate the relationship between the number of coils in an electromagnet and its strength. [1:09]
Khan Academy
Khan Academy: Electromagnet: Electromagnetic Field (Forward vs. Reverse)
Apply current in both directions and notice that the response is different. [0:35]
Bozeman Science
Bozeman Science: Nuclear Reactions
Mr. Andersen contrasts nuclear reactions to chemical reactions. He explains the four main forces of nature; including gravity, electromagnetism, strong, and weak nuclear forces. He also explains how fusion differs from fission.
Khan Academy
Khan Academy: Electromagnet: Electromagnetic Field (Loop)
A demonstration of the simplest electric motor showing current being applied to a single loop of wire. This is the principal observation leading to all electric motors. Based on actual observations from 1819 by Hans Christian Oersted....
Khan Academy
Khan Academy: Electromagnet: Discovery of Electromagnetism
Hans Christian Orsted made this famous observation in 1819 when he discovered electromagnetism.
Mocomi & Anibrain Digital Technologies
Mocomi: Discovery of Magnets
Animated video explores the discovery of magnets.