This simple demonstration shows a strong magnet can cause current to flow in a coil of wire.
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As the temperature of the wire decreases, so does the resistance.
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As a steel ball rolls down a ramp to collide with three other balls, momentum and energy are conserved.
When a magnetic ball rolls down the same ramp, it launches the other ball completely off the ramp!
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This one can be messy but it shows how like charges repel quite dramatically.
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Get an electrostatic hairdo in this classic demonstration!
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Study Science @ SMU!
A podcast that reviews the
Voyager Golden Record!
