. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects. nner above-men-tioned, traverses the wires, it suddenly comes to astandstill at theendof the charcoal candles; therethe two opposite currents, positive and negative,meet, rush at one another as it were, owing tothe great affinity of positive for negative. Theresult of this combination of opposite electrici-ties is called the discharge or spark, hererepresented in the incandescence of the char- _coal and the production of light. What was ?electricity or magnetism is now represented ?by light and heat.
. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects. nner above-men-tioned, traverses the wires, it suddenly comes to astandstill at theendof the charcoal candles; therethe two opposite currents, positive and negative,meet, rush at one another as it were, owing tothe great affinity of positive for negative. Theresult of this combination of opposite electrici-ties is called the discharge or spark, hererepresented in the incandescence of the char- _coal and the production of light. What was ?electricity or magnetism is now represented ?by light and heat. The whole thing is a most curious exemplifi-cation of the relation between forces. Firstthe sun-force produced the wood, which ulti-mately became coal, and in which the gas isimprisoned. The gas thus indirectly producedby sunlight and sunheat is liberated by heat inthe furnaces of the gasworks, and made to workthe engine. Great mechanical force is thusproduced : that force transmitted to a magnetinduces two opposite electric currents, which,recombining, reproduce, as it were, the sun-. FlG. 75. —FORCING nV THE ELECTRIC LIGHT. moisture do but set the plant to work, and inso doing it, at least at first, avails itself of thestored material made the season before. The machine by which the light is producedat Tonbridge Wells is worked by a small gasengine, which latter is so very convenient in itsaction that we are surprised such engines are notmore frequently employed where gas is to behad. There is no lighting fires, getting upsteam or stoking—the engine begins to workimmediately. As to the electric light it is not needful for usto go fully into a matter that could only be ex-plained by a professed electrician, and compre-hended by one familiar with that branch ofscience. Suffice it to say that the principle ofthe light rests upon the sudden combination oftwo opposite electrical currents and the con-version of one sort of force into otherforces—magnetism, or magneto-electri
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Keywords: ., bo, bookdecade1870, booksubjectgardening, booksubjecthorticulture
