Democritus 400 B.C. |
Robert Boyle 1662 |
Joseph Priestley 1774 |
Antoine Lavoisier 1785 |
John Dalton 1803 |
Amedes Avogadro 1811 |
Louis Pasteur 1857 |
Dmitri Mendeleev 1869 |
JJ Thomson 1897 |
Ernest Rutherford 1911 |
Niels Bohr 1913 |
James Chadwick 1932 |