. Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray . Fig. 47.—Principle of the dynamo. If the lessons in magnetism and electromagnetism have beenclosely studied, the operation of the dynamo and motor will beeasily understood. When a wire conductor is moved through a CONTROLLING AND MEASURING APPARATUS 83 magnetic field, a current is started in the conductor. The direc-tion of this induced current will depend upon the direction of thelines of force and the direction in which the condu
. Practical electro-therapeutics and X-ray therapy : with chapters on phototherapy, X-ray in eye surgery, X-ray in dentistry, and medico-legal aspect of the X-ray . Fig. 47.—Principle of the dynamo. If the lessons in magnetism and electromagnetism have beenclosely studied, the operation of the dynamo and motor will beeasily understood. When a wire conductor is moved through a CONTROLLING AND MEASURING APPARATUS 83 magnetic field, a current is started in the conductor. The direc-tion of this induced current will depend upon the direction of thelines of force and the direction in which the conductor cuts the linesof force. In Fig. 47, 1 is a horseshoe magnet, with lines of magneticforce passing from the north pole N to the south pole S, as indi-cated by the arrows. If a wire conductor B is allowed to passupward between the poles N and S, across the lines of force, a cur-rent will be started (induced) in conductor B in the direction ofthe arrow. If the conductor is turned downward, cutting the linesof force in a downward direction (1), the induced current in the con-
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1912
