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Scientific American, Vol. 100, No. 14 (April 1909) (1909)

leaf 3

An illustration from Scientific American, Vol. 100, No. 14 (April 1909), 1909, leaf 3
ly be out of the question to con- has practically reached its zenith, and is likely to be extraordinary precautions been taken to insulate su- struct a magnetic vibrator of the type ordinarily used, supplanted sooner or later by a system of ignition perimposed layers from one another. Instead, No.… … series, so that the est resemblance to its current has to pass prototype of the labo- AN ENORMOUS INDUCTION COIL WHICH MAKES A SPARE 50 INCHES LONG. from one brush to its ratory, though the classic lines given it by Ruhmkorff are still apparent corresponding ring, through the latter to the brush B.…

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