ANSWERS: 5
  • The magnet creates a magnetic field, that the ring follows, probably reversing original polarity and causing rapid repulsion (the ring jumping into the air).
  • Since aluminum does not react to magnetic fields, I can't explain it.
  • thats easy! they either put the two positive or negative sides of the magnet and electromagnet facing eachother causing them to repel eachother! DUH!
  • Abracadabra is a magical word?
  • A-HA! Damnit, I had no idea how to explain this, but I looked and looked and I found the damn answer! Diamagnetism. (I found one website where they were actually able to levitate a frog in a small solenoid cylinder!) Aluminum is not ferromagnetic. Iron IS. The atoms in iron line up in such a way that a piece of iron is basically billions of tiny magnets stuck together north/south/north/south, but aluminum is all jumbled up inside, so it won't stick to a refrigerator magnet like iron will. But apparently inducing a magnetic field using coils causes some sort of eddy current in the hollow of the aluminum cylinder (also works with a hollow aluminum ball) which creates a magnetic field that does react to the induced magnetic field. Apparently if you place the aluminum in liquid nitrogen first, and then levitate it, it starts spinning like crazy, and physicists aren't exactly sure why just yet. Anyway, I know I murdered the answer. I have only an introductory understanding of it myself, but if you want to understand, look up diamagnetism, and click a link from a physics or university site. Happy hunting!

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