A rotating magnetic field is a magnetic field which changes direction at (ideally) a constant angular rate. This is a key principle in the operation of the alternating-current motor. Rotating magnetic fields are mainly utilized in electric rotating machinery e.g. electric generators or induction motors and therefore electromechanical applications. However it can also be used in purely electrical applications as e.g. induction regulators.
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Famous quotes containing the words magnetic and/or field:
“We are in great haste to construct a magnetic telegraph from Maine to Texas; but Maine and Texas, it may be, have nothing important to communicate.”
—Henry David Thoreau (1817–1862)
“My business is stanching blood and feeding fainting men; my post the open field between the bullet and the hospital. I sometimes discuss the application of a compress or a wisp of hay under a broken limb, but not the bearing and merits of a political movement. I make gruel—not speeches; I write letters home for wounded soldiers, not political addresses.”
—Clara Barton (1821–1912)