Who Discovered It

By deuce2
  • 400

    Romans Create the First Aqueduct

    Romans Create the First Aqueduct
  • 460

    Democritus Introduces The Concept Of The Atom

    Democritus Introduces The Concept Of The Atom
    He asked this question: If you break a piece of matter in half, and then break it in half again, how many breaks will you have to make before you can break it no further?
  • 460

    Democritus Interesting Fact

    Democritus Interesting Fact
    Aristotle placed him among the pre-socratic philosophers
  • Period: 460 to

    Chemical timeline

  • Thomas Edison Invents The First Ever Movie

    Thomas Edison Invents The First Ever Movie

  • J.J. Thompson Discovers That Atoms Have Electrons

    J.J. Thompson Discovers That Atoms Have Electrons
    He proposed a model for the structure of the atom. He also knew that electrons have a negative charge and thought that matter must have a positive charge.His model looked like raisins on the surface of a lump of pudding

  • JJ Thompson Interesting Fact

    JJ Thompson Interesting Fact
    He won the noble prize in physics

  • Ernest Rutherford Discovered That Atoms Have a Nucleus

    Ernest Rutherford Discovered That Atoms Have a Nucleus
    It was discovered as a result of his interpretation of the famous 1909 Rutherford experiment

  • The Triangle Shirtwaist Factory Catched on FIre

    The Triangle Shirtwaist Factory Catched on FIre

  • Ernest Rutherford Interesting Fact

    Ernest Rutherford Interesting Fact
    He was born with an umbilical hernia which killed him when it was left untreated too long

  • Niels Bohr Discovers Atoms Move at Different Energy Levels

    Niels Bohr Discovers Atoms Move at Different Energy Levels
    He observed the spectral lines of radiation when the atoms were excited

  • Niels Bohr Discovers That Eletrons Move in Orbitals

    Niels Bohr Discovers That Eletrons Move in Orbitals
    He proposed a model that showed eletrons moved around in the nucleus in discrete enegry

  • Henry Ford Creates the Assembly Line

    Henry Ford Creates the Assembly Line

  • Bohr Interesting Facts

    Bohr Interesting Facts
    He taught himself English by reading DIckers Pickwick Papers over and over again

  • The Panama Canal is Offically Open

    The Panama Canal is Offically Open

  • Enerst Rutherford Discovers the Proton

    Enerst Rutherford Discovers the Proton
    He was performing various experiments in the field of radio activity and noticed that there was something within all the which was divisble which determined which element the atom represented

  • USA Enters WWI

    USA Enters WWI

  • Amelia Earhart Became First Woman to Fly Solo Across the Atlantic

    Amelia Earhart Became First Woman to Fly Solo Across the Atlantic

  • James Chadwick Interesting Fact

    James Chadwick Interesting Fact
    He was a prisoner of war with other British citizens during WWI

  • James Chadwick Discovers the Neutron

    James Chadwick Discovers the Neutron
    He saw the atomic number was less than the atomic mass and he realized that since electrons have no weight something the proton was contributing to the mass which was the neutron