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View full lesson: http://ed.ted.com/lessons/the-2-400-year-search-for-the-atom-theresa-doud

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.

Lesson by Theresa Doud, animation by TED-Ed.

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