1 gen 1904 anni - Thomson's Model of The Atom
Descrizione:
This model is referred to as the "raisin bun" or "plum pudding".
Thomson's experiments while he was studying the passage of an electric current through a gas, led to his discovery of very light negative particles called electrons.
He proposed that electrons have a small mass and a negative charge, an atom is a sphere of positive electricity and negative electrons are in the positive sphere so that the atom is uncharged.
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