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vented therotating

magnetic field,

and pioneered the

use of a

rotaryfield of

force to operatemachines. He

exploited the

http://en.wikipedia.org/wiki/Alternatorhttp://en.wikipedia.org/wiki/Alternatorhttp://en.wikipedia.org/wiki/Alternatorhttp://en.wikipedia.org/wiki/Alternator

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principle to

design a unique

two-

phaseinduction

motor in 1883. In

188,!alileo"errarisindepende

ntly researched

http://en.wikipedia.org/wiki/Galileo_Ferrarishttp://en.wikipedia.org/wiki/Galileo_Ferrarishttp://en.wikipedia.org/wiki/Galileo_Ferrarishttp://en.wikipedia.org/wiki/Galileo_Ferraris

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the concept.

In1888, "erraris

pu#lished his

research in a

paper to the

$oyal %cademyof &ciences in

'urin.'esla had

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suggested that

thecommutatorsfr

om a machine

could #e removed

and the

devicecouldoperate on a

rotary field of

http://en.wikipedia.org/wiki/Commutator_(electric)http://en.wikipedia.org/wiki/Commutator_(electric)

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force. (rofessor

(oeschel, his

teacher, stated

that would #e