On January 21 at 3.30 pm, by the Politecnico di Torino was held the dedication ceremony for the Milestone “Rotating Fields and Early Induction Motors, 1885-1888” with the citation:

“Galileo Ferraris, professor at the Italian Industrial Museum (now Polytechnic) of Turin, conceived and demonstrated the principle of the rotating magnetic field. Ferraris’ field, produced by two stationary coils with perpendicular axes, was driven by alternating currents phase-shifted by 90 degrees. Ferraris also constructed prototypes of two-phase AC motors. Rotating fields, polyphase currents, and their application to induction motors had a fundamental role in the electrification of the world.”

Please, find below some photos and the video registration of the ceremony.





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