| Scientists Ernest Rutherford and Niels Bohr meet to discuss their discoveries and theories. |
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 | Hello Mr. Bohr. With the help of my gold foil experiment, I made an amazing discovery. | |
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| Hi Mr. Rutherford. Before you tell me what you discovered, what is this "gold foil experiment" you speak of? | |
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| Rutherford explains to Bohr what his gold foil experiment is. |
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| Well, I shot beams of alpha particles at a very thin gold foil. This gold foil was surrounded by a circular sheet of zinc sulfide which would light up when hit with alpha particles. | |
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| This sounds very interesting! What were your observations and conclusions? | |
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| The results are explained. |
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| A small portion of the particles were deflected, indicating the greater part of the mass of the atom was concentrated in the small centre called the nucleus. | |
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| Wow! You proved the "plum pudding theory" wrong. | |
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