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Our knowledge of the atom is the result
of several centuries of experiment and discovery. Before the late 1700s, people
weren't sure that something like an atom even existed. Since then, we have been able
to create a very detailed picture of the atom.
Follow the history of discovery
on a chronological tour or view a specific
event.
Start the Tour! 
Specific
Events:
 John Dalton and
the Beginning of Modern Atomic Theory
Cathode Ray
Experiments
Sir John J.
Thomson's Discovery of the Electron
Sir John J.
Thomson's Plum Pudding Model
Millikan's
Oil Drop Experiment
Ernest
Rutherford's Discovery of the Nucleus
Bohr
Model of the Atom
Quantum
Model of the Atom
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