Two pith balls are tied to separate strings. The pith balls are non-conducting, and have no permanent dipole moment, but they are polarizable. Therefore, when a charged object is brought near the pith balls they will be attracted to one another. Historically, this has been called the amber effect, but it is much more general.
(5A10.10) Producing Electrostatic Charges
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Two pith balls are tied to separate strings. The pith balls are non-conducting, and have no permanent dipole moment, but they are polarizable. Therefore, when a charged object is brought near the pith balls they will be attracted to one another. Historically, this has been called the amber effect, but it is much more general.
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