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...pins the dark grey magnet mounted on a [[flywheel]], seen on the left. The magnet induces an electrical current in the red copper winding, seen on the right. Inside the flashlight, a sliding magnet moves back and forth inside a solenoid, or a spool of copper wire. Current

# '''[[Lake Morena County Park]]''' - This spectacular lake is a magnet for anglers, yet the 3,250 acres of this East County park offer something f

...e electricity using electromagnetic induction. They use a strong permanent magnet that can freely slide up and down a tube, passing through a coil of wire as

...text. However, it should be noted that "there is no explicit mention of a magnet in the ''Louen-heng''" and that "beforehand it needs to assume some hypothe ...d then tempering or striking it. However, this method produces only a weak magnet so other methods are preferred. This magnetised rod (or magnetic needle) is