Elizabeth Surratt

  • 200

    460-370 B.C. Democritus

    460-370 B.C. Democritus
    Democritus was a greek philosipher, who believed all sensation is a form of touch resulting from atoms colliding with the sense organs.He thinks that the senses reveal a lot of colors, smells, and tastes while, in reality, only atoms and the void exist.
  • 201

    384-322 B.C Aristotle

    384-322 B.C Aristotle
    Aristotle was the first philosopher to analyze the process where certain hypothesis can be logically inferred to be true.
  • 1766-1844 John Dalton

    1766-1844 John Dalton
    Daltons first theory states that each chemical element is composed of its own kind of atoms, all with the same weight. It says why a fixed weight of one substance always combines with a fixed weight of another substance in forming a compound.
  • 1871- 1937 Rutherford 1909

    1871- 1937 Rutherford 1909
    Rutherford became the first to break up the nucleus of an atom. Rutherford and Fredrick Soddy, a british chemist, proved that radioactive elements give off electrically charged particles known as alpha and beta particles.
  • 1856-1940 Thompson

    1856-1940 Thompson
    He discovered the electron and the isotopes. Thomson was awarded the 1906 Nobel Prize in Physics for the discovery of the electron.
  • 1871- 1937 Ruthford 1911

    1871- 1937 Ruthford 1911
    Rtherford was the first to establish the nuclear model of the atom in 1911.
  • 1885- 1962 Bohr

    1885- 1962 Bohr
    In 1922 Bohr won the noble prize in physics for his hard work on atomic stucture. Later in the 1930's Bohr studied the nucleus of the atom and quantum machanics.
  • 1887-1961 Schrodinger and Heisenberg

    1887-1961 Schrodinger and Heisenberg
    Schrodinger developed the equation known as the "Schrodinger Equation" this equation was developed in 1925 and was introduced in 1926. Heisenberg studied the spectra that is given off by atoms. These studies led him to make the matrix machanics. Matrix machanics is a form of quantum machanics that provides a mathmatical description of electron orbits.