We Can Figure This Out.org
Virtual Lab: Pithball Ping Pong
University of Virginia
             
 
© 2003-Present, John C. Bean
 
Atoms in the fur do not hold onto electrons quite as strongly as atoms of the rod (which is made of Teflon or plastic).

As a result, when a little energy is added (by rubbing the rod and fur together), some of the electrons will jump from the fur to the rod.

The rod now contains more electrons than protons and thus acquires a net negative charge (shown by the blue glow).

 
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