- 1. Mechanics
- 2. Harmonic Motion, Waves and Sound
- 3. Matter and Thermodynamics
- 4. Electricity and Magnetism
- A. AC Circuits
- B. Capacitors and Inductors
- C. DC Circuits
- D. Electrodynamics
- E. Electronics
- F. Electrostatics
- G. Mag Lev
- H. Magnetic Fields of Currents
- I. Magnetostatics
- 10. Barkhausen Effect
- 20. Compliance, Reluctance, Coercion
- 30. Curie Motor
- 40. Curie Temperature
- 50. Earth's Magnetic Field
- 60. Gauss Cannon
- 70. Hysteresis Curve
- 80. Magnetic Field of a Bar Magnet
- 90. Magnets and Compasses
- 100. Paramagnetism and Diamagnetism
- 110. Rowland's Ring
- 120. Simple Measurement of B
- 5. Light and Optics
- 6. Modern Physics
- 7. Astronomy
- 8. Software and Multimedia
- 9. Index and code conversion from older manual
- External Resources
Instructional Resource Lab
30. 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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