A magnet will encounter no electromagnetic braking force while inside a superconducting tube, predict physicists in Brazil. This is exactly the opposite of what occurs in a popular classroom ...
Discover how to build a simple homopolar motor using everyday household items in this easy-to-follow tutorial. Learn the ...
Discover how to build a simple electric train using just a copper coil, an AA battery, and disc magnets in this step-by-step ...
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