Synopses & Reviews
Pump current through a copper wire and you get a magnetic field. Wrap that copper wire into a coil, and the magnetic field intensity increases dramatically. You've created an electromagnet.
Chapters include: electromagnetism, types of magnets used, forces developed from magnetism, magnet design procedure, and permanent magnets. You get a formula for finding the pull of a magnet and a complete design section with curves, formulas, and examples for creating clapper, solenoids, e-types, AC and DC electromagnets. You also get useful info characteristics of the different materials used in (1948) permanent magnets.