it's a coil of wire over a magnet. one side of the wire is always making contact with the paper clip, and the other side is stripped so that it's only sometimes making contact. then you hook up the paper clips to a power supply so that while the wire is making contact, the magnet exerts force on the coil and causes it to spin, and while the wire isn't making contact, it is coasting.
No comments:
Post a Comment