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1932 BCE
James Chadwick
English physicist who was famous or his discovery of the neutron -
1925 BCE
Heisenberg
German theoretical physicist and one of the key pioneers of quantum mechanics. -
1887 BCE
H.G. Moseley
an English physicist whos work justified rom physical laws of the previous empirical and chemical concept of the atomic number -
1885 BCE
Niels Bohr
Danish physicistfoundational contributions to understanding atomic structure and quantum theory -
1882 BCE
Hans Geiger
a German physicis best known as the co-inventor of the detector element of the Geiger–Marsden experiment which discovered the atomic nucleus -
1878 BCE
Lise Meitner
Austrian-Swedish physicist who worked on radioactivity and nuclear physics. -
1871 BCE
Ernest Rutherford
New Zealand physicist who came to be known as the father of nuclear physics -
1868 BCE
R.A. Millikan
American experimental physicist known for the measurement of the elementary electronic charge -
1867 BCE
Marie Curie
a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity. -
1865 BCE
J.J. Thomson
English physicist -
1834 BCE
Dmitri Mendeleev
Russian chemist and inventor. He created a farsighted version of the periodic table of elements -
1766 BCE
John Dalton
English chemist best known for his pioneering work in the development of modern atomic theory -
1667 BCE
Isacc Newton
English mathematician and astronomer. He was a key igure in the scientific revolution. -
490 BCE
democritus
Ancient Greek pre-Socratic philosopher know best today for his formulation of an atomic theory.
