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20: Static Electricity
Discovery of the Electron
Browse through this presentation of the history of the electron,
including a biography of J. J. Thomson and a *.wav file of Thomson
discussing his discovery. Why was Thomson's suggestion that
cathode rays were made up of pieces of atoms so startling?
Kite Professional scientists recreate Franklin's proposed "kite
experiment." Be sure to watch the video of the experiment.
Why is St. Elmo's fire actually not a good omen, but a warning
Between Earth and Space
This article in Scientific American discusses different
types of high-altitude lightning, including red sprites, blue
jets, elves, and gamma-/X-ray emissions. How are charges formed
in the upper atmosphere?
of the Van de Graaff Generator
This page features a description of the original 5 million volt
generator created by Van de Graaff and later donated to MIT.
What was constructed inside the two domes?
Does a Photocopier Work? Visit this site for a simple description and more modern
explanation of how a copier works. How does this relate to how
laser printers work, as described in the How It Works for Chapter