In the year 2454 (1911) nest lodoe ratthoefod (Lord Ernest Rutherford) to study Atomic models of Thomson and suspected atomic structures according to Thomson's model? By hypothesized that"If the atoms are structured according to the model of Thomson, actually, so when alpha particles, which are shot with positive ions into atomic nuclei thukonuphak is a straight line, all because the atoms have the same uniform density, all the atoms".To prove this hypothesis, Ratthoefod alpha particle firing trials have been made to the thin gold leaf thickness does not exceed 10-4 cm by fluorescence has supported experimental results appear as follows:1. most of the particles moving through the gold plate in a straight line.2. a few particles from a straight line.3. very few particles reflect back in front of the gold plates.
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