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1. Electricity & Magnetism --Electromagnetism
2. Moving electrons (electricity) --> magnetism 1. Electromagnet
More coils,
or more current (more power source)
= stronger magnet
2. Motor
Permanent magnet interacts with temporary magnet to produce motion
3. Moving magnets --> electricity 1. Electromagnetic “induction”
(science sex)
EM Induction = to force current to flow
2. Generator
The direction of current (electron flow) is dependent on:
Direction the magnet (or coil) moves
Poles of magnet
4. History Du Chatelet -- F=mv2 (F=ma)
LaVoissier -- Conservation of Mass
Faraday -- magnetism makes electricity
Maxwell -- electricity makes magnetism
Meitner and Hann -- break apart atoms
Einstein -- E = mc2
5. Electric and Magnetic Fields(We do a lab/webquest in the library next class to help you understand).
6. E & M Fields are VECTORS Vectors = represented by arrows
Length of arrow = strength/magnitude
Direction of arrow = direction of field
7. More Rules for Field Lines
The lines of force represent the path a particle with a small positive charge would take if released in the field.
8. THE END OF NOTES Next Class: meet here (G202) and review generator/motor labs, then to the library for web lab.
E-M quiz: Wed/Th next week
NOW -- Bill Nye: Electric Circuits!