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jan 1, 1897 - Thomson Model

Description:

The Thomson model or the plum pudding model is his vision of the atom, which he represented as negatively charged particles (electrons) within the positively charged atom. This model/breakthrough was important as it contradicted Democritus' idea that an atom was indivisible, as it showed that it could, in fact, be broken down into smaller fragments.

Added to timeline:

Date:

jan 1, 1897
Now
~ 128 years ago

Images: