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Deomcritus
Democritus lived from 460 BC to 370 BC. He was a greek philosopher. He noted that all matter is made from atoms, and that atoms could be combined with other atoms. -
http://www.nndb.com/people/278/000049131/
John Dalton lived 78 years and accomplished many things in his lifetime. -
http://www.johndalton.org/
Dalton believed atoms could neither be created nor destroyed. He also thought all matter is made of atoms. -
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Planck was born in Kiel, Germany in 1858. He died on October 4, 1947. He can is famously known for ussing the idea of quanta. -
JJ Thomson found that there was a positve and negative portion of atoms. He prosoposed the model similar to the chocolate chip cookie model.
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Ernest Rutherford was known to be the father of nuclear physics. Rutherford discovered the concept of the radioactive half life. -
He founded the discoveries of the electron and radioactivity. He also found that the atom had a miniature, dense nucleus.
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WebsiteAston was born September 1, 1877 – November 20, 1945. He found that isotopes, which are tiny particular chemical element in protons.
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Born on August 12, 1887 and died on January 4, 1961. He is qknown mostly for creating the uantum mechanical model of the atom
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He was born Aug 15, 1892 and died on Mar 19, 1987. He proposed in 1924 that electrons could behave as waves under some conditions.
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He was bornr on August 8, 1902 and died on October 20. He is most famous for helping develop the quantum electrodynamics.
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He established that atomic number is determined by the numbers of protons in an atom. He also discovered the fourth subatomic particle,the neutron. -
He was born on Dec 5, 1901 and died on Feb 1, 1976. His main contribution was winning the 1932 Nobel Peace Prize for the contribution the theory of quatium.
