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Electricity & Magnetism |
A natural and technological history of electricity and magnetism.
This set of videos Includes:
Electricity
• Shows how we harness one of nature's greatest forces
• How electricity is delivered to consumers (and what can happen when the system fails as in the 1977 New York City blackout)
• How electricity is being used in innovative new medical applications, including the latest electronic limbs
• Interviews a man who specializes in the dangerous art of maintaining high voltage power lines and
takes a tour of the technology that lets the Hoover Dam generate 4 billion kilowatts of electricity a year
• With fantastic footage of thunderstorms at work, images of spectacular science experiments, and interviews with electricians and electrophysiologists
• Grades 6-12 (51:30).
Magnetism
If somehow the laws of physics changed and there was no magnetism, the world as we know it could cease to exist - and so would we!
• Natural history of magnetism from lodestones of the Greeks and Guilielmo Gilberto's vision of Earth's magnetic soul
• The use of magnets in computer storage devices and Global Positioning Systems
• Shows how magnetism has driven scientific discovery, makes our technology dependent world possible, and protects us from harmful solar particles
• Looks at magnetism in medicine
• The early work of Faraday
• Bacteria that are living bar magnets.
• Grades 6-12 (51:30).
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