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Pith Balls
# 5A20.20


MOVIES
320x240 428k
160x120 237k
Description: Charge pith balls and view the separation. This only works on very dry days, usually in January or February. We recommend using rods and Pivot.

Purchased/Built: purchased

Setup Time: 5 minutes

Quant. in Demo Room: 1

Demo References
Freier and Anderson Ea-5 Suspend two small pith balls from a common support.
Sutton E-7 Charge pith balls.
The American Journal of Physics AJP 46(11),1131 Charge two pith balls with an electrostatic generator, project on the wall and measure, discharge one ball, and remeasure the separation. Accuracy is typically 2%.

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