Physical Science

By merrickdycus
  • Period: 460 BCE to 370 BCE

    Democritus

    he was a greek philosopher who came up with the atomic theory
  • Period: 384 BCE to 322 BCE

    Aristotle

    he did not believe in the atomic theory and taught otherwise.
  • Period: to

    John Dalton

    he pioneered the modern atomic theory
  • Period: to

    JJ Thomson

    he discovered the electron in 1897 he also studied positively charged particles in neon gas.