magnetize

Make a small horseshoe magnet from a piece of the very best steel obtainable, and magnetize it to as high a strength as possible.

If we magnetize a wire placed east and west, it will retain this polarity until freed by vibrations, as already remarked.

A similar phenomenon takes place if we magnetize a rod held vertically in the direction of earth's magnetism.

(B) Magnetize the needle so that its point will be a N pole.

Men had wondered how an electrical discharge could magnetize steel.