• The ancient Greek philosophers did a lot of discussing, with part of their conversations concerning the physical world and its composition.
  • Some felt one thing was true while others believed another set of ideas.
  • One of these philosophers was Democritus (~460-~370 B.C.
  • ), often referred to as the "laughing philosopher" because of his emphasis on cheerfulness.
  • We had to wait almost two thousand years before scientists came around to seeing the atom as DemOCritus did.
  • The word "atom" comes from the Greek atomos and means "indivisible"
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