John Dalton, a Quaker from northern England, was a color-blind scientist. He presented his atomic theory that finally began to make sense to natural philosophers. He also invented a series of symbols for the elements, and created the first table of atomic weights. We learn about Joseph Prout's unusual atomic idea, and Gay-Lussac's work with gases that meshed with atomic theory. Then Alessandro Volta invented the electric battery, which allowed Humphry Davy to find new elements.

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