Trebel, George. [from old catalog] · New York, F. Tousey · leaf 19
ch other thecharge remains for many days, or even weeks. The charge isusually dissipated by particles of dust in motion or other con-ducting substances in the atmosphere from one of the coatings 12 HOW TO MAKE AND to the other, or by the uncoated interval becoming moist andlosing its insulating… … Figure 5 represents two Leyden jars, one charged positivelyand the other negatively, and placed side by side on a table.Between tbem is suspended by a siik thread an image of a spi-der, having a body of elder pith and legs of black linen thread.This image is alternately attracted and repelled…
Electricity
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