william watson|benjamin franklin came up with positive and negative charges in electricity.
william watson|benjamin franklin came up with positive and negative charges in electricity.
who came up with positive and negative charges in electricity?
william watson|benjamin franklin
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materials are made of atoms that are normally electrically neutral because they contain equal numbers of positive charges (protons in their nuclei) and negative charges (electrons in "shells" surrounding the nucleus). the phenomenon of static electricity requires a separation of positive and negative charges. when two materials are in contact, electrons may move from one material to the other, which leaves an excess of positive charge on one material, and an equal negative charge on the other. when the materials are separated they retain this charge imbalance.









































contact-induced charge separation
static electricity