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The 2,400-year search for the atom - Theresa Doud

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TEDEd Animation

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How do we know what matter is made of? The quest for the atom has been a long one, beginning 2,400 years ago with the work of a Greek philosopher and later continued by a Quaker and a few Nobel Prize-winning scientists. Theresa Doud details the history of atomic theory.

Bohr’s “planetary model” states that electrons are in specific energy levels or “orbits” around the nucleus. Explain how this is not possible using Heisenberg’s uncertainty principle.

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TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Theresa Doud
  • Director Franz Palomares
  • Artist Lisa LaBracio
  • Script Editor Emma Bryce
  • Narrator Addison Anderson

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