Rutherford's gold foil experiment in 3D
Alpha particles stream at a thin gold foil. Count where they land on the detector, and change their energy.
Learn atomic structure properly
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Questions students ask
What did the gold foil experiment show?
Most of the atom is empty space, and the positive charge and almost all the mass are concentrated in a tiny nucleus.
Why did some alpha particles bounce back?
They came very close to a nucleus head-on and were repelled by its concentrated positive charge.
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