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This
experiment uses a coil of wire carrying 120 VAC power with a solid iron
core inside the coil. When power is applied through a momentary switch
a large magnetic field is created that creates eddy currents inside aluminum
rings placed over the iron core. The red aluminum ring is repelled off
of the core and flies up in the air. The green ring is also made from aluminum
but it will not "jump" off because the ring is cut thus preventing large
eddy currents from building. The yellow ring is made of stainless steel
and due to it's poor conductivity it also will not jump. The large ring
is also aluminum and will jump, it's there because its heavy like the stainless
steel ring and counters anyone who claims the stainless ring won't jumpdue
to its weight.
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