Ferraris, Galileo gälēlā´ō fār-rä´rēs [key], 1847–97, Italian physicist and electrical engineer. He is noted for his work on alternating current and for his discovery (1885) of the rotary magnetic field, through which he promoted the development of alternating-current motors.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Physics: Biographies