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Physical Science
Chpt 11 vocab for final
| Term | Definition |
|---|---|
| Hans Oersted | noticed that the current carrying wire had produced a magnetic field |
| William Gilbert | wrote a book on magnetism and brought the study of magnetism into the realm of science |
| Greeks | found lodestones which are natural magnets |
| Petrus de Mericourt | found the two poles of magnets |
| Chinese | developed working compasses for navigation |
| Paramagnetic | a weak magnetic material |
| Solenoid | a coil wire that acts like a magnet |
| Stator | ring of coils surrounding the rotor |
| Ferromagnetic | a strong magnetic material |
| Domain | large groups of magnetic dipoles at the particle level |
| Rotor | prime mover |
| Permanent Magnet | a ferromagnetic material that contains enough aligned magnetic domains to give it a lasting magnetic character |
| Dipoles | the two poles on a magnet |
| Lines of Force | they show how the magnet is responding to the magnetic poles; they point away from the north pole and toward the south pole |
| Law of Magnetism | opposite magnetic poles attract and like magnetic poles repel |
| Alternating Current | the process of when a north pole passes by a coil, creating induction and a current in one direction and when a south pole passes, the current flows in the opposite direction |
| Direct Current | current goes in one direction |
| Curie Temperature | the temperature above which a permanent magnet loses its ferromagnetic properties |