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Democritus
Democritus was a Greek philosopher that lived from 470 bc to 380 bc, Democritus was the first man to create the concept of atoms and he beleived the world was made of atoms. -
Sir Isaac Newton
Isaac Newton was a english physicist who lived from 1643 to 1727. He studied gravity, helped invent calculus, and invented the reflecting telescope. His most famous discovery was made in 1687 which was the 3 laws of motion. -
John Dalton
Chemist John Dalton was born 1766 and died in 1844. He lived in a Quaker family and was also the first to study color blindness. Also in the 1800s, he was the first scientist to explain the behavior of atoms in terms of the measurement of weight. -
Dmitri Mendeleev
Dmitri Mendeleev lived from 1834 to 1907. He is the creator of the first periodic table. -
J.J Thomson
Thomson was a british Philosopher that lived from 1856 - 1940. In 1897 he made the discovery of the electron and showed that the atom could split in smaller pieces. He is given credit for being the stepping stones to creating a detailed model of the atom. He also discovered the subatomic particle and isotopes. -
Marie Curie
Marie Curie was a physicist, chemist and a pioneer in the study of radiation. She lived from 1867 to1934. She is most famous for her discovery in 1903 when she discovered the elements polonium and radium. -
R.A Millikan
Robert Andrews Millikan lived from 1868 to 1953. He was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for the measurement of the elementary electronic charge and for his work on the photoelectric effect. -
Ernest Rutherford
Rutherford was born in 1871 and died in 1937. He is best known for being the first man to split an atom but he also made the discovery of the nucleus, proton, alpha particle and the concept of half lives. -
Henry Moseley
Henry Moseley was a english physicist who lived from 1887 to 1915. Henrys contribution to the atomic theory was the justification from physical laws of the previous empirical and chemical concept of the atomic number. -
Niels Bohr
Niels Bohr was a danish physicist that lived from 1885 to 1962. He is best known for his contributions to the understanding of quantum physics and atomic structure. He was also a huge proponent of scientific research, including the best practices and sharing of information. -
Hans Geiger
Geiger was a German Chemist born 1882 and died in 1945. Geigers contribution to the Atomic theory was the discovery of the atomic nucleus. -
Heisenberg
Heisenberg lived from 1901 to 1976 .He was a German theoretical physicist and one of the key pioneers of quantum mechanics. e was a principal scientist in the Nazi German nuclear weapon project during World War II. He travelled to occupied Copenhagen where he met and discussed the German project with Niels Bohr. -
James Chadwick
James Chadwick was an English Physicist that lived from 1891 to 1979. He is known for the discovery of the neutron. -
Lise Meitner
Lise meitner was an Austrian physicist. He lived from 1868 to 1978. Meitner was part of the team that discovered nuclear fission in 1938.
