What did Rutherford's gold foil experiment tell about the atom?

The alpha particles that were fired at the gold foil were positively charged. ... These experiments led Rutherford to describe the atom as containing mostly empty space, with a very small, dense, positively charged nucleus at the center, which contained most of the mass of the atom, with the electrons orbiting the nucleus.

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a sequence is a function whose domain is the set of natural numbers.

natural numbers are all the negative and positive integers