Trebel, George. [from old catalog] · New York, F. Tousey · leaf 12
ood conductors, that so soon as theelectricity is generated, it passes through the hand and bodyto the ground, and is lost. You have seen that if a glass rod or chimney is excited byrubbing, it will repel a pith ball. But if you rub a piece of seal-ing wax with a dry woolen cloth, it will attract… … two kinds of electricity, viz: positive and negative. That which attracts the ball is positive, and that which repels it is negative. Make a stand of light wood about six inches high by four 6 HOW TO MAKE AND inches wide, shaped like the illustration above, and suspendtherefrom three or four pith…
Electricity
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