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322
Antoine Lavoisier
He created the law Conservation of Matter. He was a scholar. -
400
Democritus
He descovered that an atom cannot be seperated. He proved this by smashing a seashell over and over again. -
Joseph Louis Proust
Established the law of definate proportions. This law states that in any compound the elements are present in a fixed proportion by weight -
John Dalton
Dalton proposed and atomic theory based on solid atoms. His model consisted of one solid circle. -
Michael Faraday
Contributed to the field of electromagnatism. He also contributed to electochemisrty, -
J.J. Thompson
He used a CRT or Cathode Ray Tube to determine charge to mass ratio. Discovered the electron. -
Marie & Pierre Curie
Marie Curie wrote a doctorate for a thesis on radioactive substances. Her and her husband won a Nobel Prize for physics and the discovery of radioactivity. -
Henri Becquerel
He discovered radioactivity along with Marie Curie and Pierre Curie. He was awarded a Nobel Prize for his discovery. -
Albert Einstein
He developed the general theory of reletivity. He is know for his mass to energy equivalence formula. E=mc² -
Max Planck
His quantum theory revolutionized human understanding of atomic subatomic processes. Him and Einstein revolutionized 20th century physics. -
Niels Bohr
His contritutions to the understanding of atomic structure and quatum theory. He won a Nobel prize in physics. -
Robert Milikan
He was a physiacist whos famous for his measurement of the elementary electronic charge. Also know for his work on the photoelectic effect. -
Louis DeBroglie
He sugested that all matter has wave properties. He postulated about the wave nature of electrons. -
Erwin Schrodinger
Wrote about quatum mechanics. He aslo wrote about quatum theory. -
James Chadwick
He was an English physicist who discovered the neutron. He was awarded a Nobel Prize for his discoveries. -
Otto Hahn
Makes advances in the field radioactivity and radiochemisrty. In 1944 he was awarded a Nobel Prize for his discovery of nuclear fission. -
Lisa Meitner
She was part of a team that d iscovered nuclear fission. She was never awarded a Nobel Prize but an element was named after her. -
Glen T. Seaborg
Involved of the synthesis, discovery and research of 10 transuranium elements. This earned him a Nobel Prize in chemisrty. -
Ernest Rutherford
Discovered the radioactive half life. Also discovered that atoms have a concentred center called the nucleus. -
Aristotle
He is an Important philosopher.He thought that instead of the atom everything was made of the 5 elements. Developed the schientific method.