Walsh, David · London : Baillière, Tindall and Cox · leaf 44
the primarywire, resulting in the instant demagnetization of the core. The Eochefort and Wydt induction coil was shown in thesummer of 1898 before the Eontgen Society of London. Thechief points are the small size of the secondary wire and theinsulation, which is dependent on a special solid… … Fig. 16.—Plan of Coil : C B Contact Break. R Battery. P Primary.S Secondary. C Soft Iron Core. H Hammer. C Condenser.S G Spark Gap. b. The Tesla Coil This is a high - frequency coil with an alternating current,which yields good results with the focus tube. It can be chargedfrom an alternating…
X-rays · Radiography
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