LECTURE DEMONSTRATION MANUAL | Instructional Research Lab : ucla physics
Curie Motor

E.3.9 Curie Motor

A small wheel has monel metal wrapped around its circumference. A small light bulb is positioned to heat one part of the circumference, raising the metal above its Curie temperature so it no longer responds to magnetism. When the wheel is placed in the field of a strong magnet, it rotates slowly as one part of the circumference is continually rendered non-magnetic by the heat of the light bulb.

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