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Page 15 | Volume 1 | Chapter 2 | Static Electricity

like kind of electricity. The action thus exerted is said to take place by influence or induction.

The phenomenon of electrification by induction may be demonstrated by the following experiment:

In fig. 16, let the ebonite rod be electrified by friction and slowly brought toward the knob of the gold leaf electroscope. The leaves will be seen to diverge, even though the rod does not approach to within a foot of the electroscope.

This experiment shows that the mere influence which an electric charge exerts upon a conductor placed in its vicinity

Fig. 16. - Experiment to illustrate electrostatic induction.
Fig. 16.—Experiment to illustrate electrostatic induction. The leaves will diverge, even though the charged ebonite rod does not approach to within a foot of the electroscope.

is able to produce electrification in that conductor. This method of producing electrification is called electrostatic induction.

As soon as the charged rod is removed the leaves will collapse, indicating that this form of electrification is only a temporary phenomenon which is due simply to the presence of the charged body in the neighborhood.

Nature of the Induced Charge.—This is shown by the experiment illustrated in fig. 17.


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