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A Link in the Evolution of a Certain Form of Induction Coil

Nature volume 57, page 30 | Download Citation

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Abstract

AT a time when much interest is taken in the oscillatory electric discharge and its effects, it may not be out of place to mention that a link in the evolution of the Tesla coil is to be found in a paper by Dove (Royal Academy of Sciences, Berlin, October, 1844; Electrical Magazine, vol. ii. p. 67). It is as follows:—The external coatings of two Leyden jars were connected together by a wire spiral. This spiral was surrounded by a secondary insulated spiral. When the jars were so charged that a spark was produced on joining their internal coatings, electricity was induced in the secondary spiral. If to this arrangement of Dove, a cistern of insulating oil be added to contain the coils, and the jars, furnished with a spark gap, be charged from an induction coil, we have one of the combinations which has given such excellent results in the hands of Tesla. In 1831 Faraday (“Experimental Researches,” vol. i. § 24) arranged an experiment to discover whether the electrical discharge of a Leyden jar would produce an induced current in his induction coil; he writes: “Attempts to obtain similar effects by the use of wires conveying ordinary electricity (i.e. from a jar) were doubtful in results.”

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  1. Oxford, November 8.

    • F. J. JERVIS-SMITH

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https://doi.org/10.1038/057030b0

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