Glass Rod Pith Ball

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Static Electricity: Problem Set Use 8.99 x10 9 N•m 2 /C 2 for Coulomb’s constant and 1.60×10-19 C for the charge of an electron. Problem 1:

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Franklin’s Bells During one of his many experiments around the middle of the 18th century, Benjamin Franklin noticed that a pith ball or cork would

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Henley Electrometer c. 18th century . Pith-ball Demonstration. While not technically an electroscope, the device does indicate the presence of electric