Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 351
will continue as long as the current is sent in at b and outat b; for as fast as coils pass either b or b the directionof the current flowing through them changes, and thereforethe direction of the force acting on them changes. The lefthalf is therefore ahvays urged up and the right half down.The…
Physics
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