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500 BCE
Leucippus
Earliest Greek philosopher to develop the atomic theory. Idea that everything is composed entirely of various imperishable -
400 BCE
Democritus
Thought of first atomic theory. -
400 BCE
Aristotle
Everything is made up of earth, fire, water, air. -
1530
Paracelsus
Was a Swiss physician, alchemist, and astrologer. -
1556
George Bauer (Georgius Agricola)
German mineralogist and metallurgist. Known as the "father of mineralogy." -
Alchemy
The medieval forerunner of chemistry, based on the supposed transformation of matter. -
Robert Boyle
Robert Boyle was a natural philosopher, chemist, physicist, and inventor. He is known as the first modern chemist. -
Antoine Lavoisier
Law of Conservation of Mass. Was a meticulous experimenter. -
Joseph Proust
Law of definite proportion- masses of one element that combine with a fixed mass of another element while forming a compound with small whole number ratios. -
John Dalton
Proved the first atomic theory. -
Jons Jakob Berzelius
Berzelius was a Swedish chemist. He is considered to be one of the founders of modern chemistry. -
Joseph Gay-Loussac
Was a French chemist and physicist. He is known for his discovery of pressure and temperature, his two laws related to gases, and for his work alcohol-water mixtures. -
Amedeo Avogadro
Was an Italian scientist that was noted for his contribution to the molecular theory. -
J.J. Thomson
Experimented with the Crookes tube. He was Crookes student. -
Henri Becquerel
Becquerel was a French physicist and the first person to discover evidence of radioactivity. -
Robert Millikan
An American experimental physicist. He was honored with the Nobel Peace Prize for the measurement of the elementary electric charge and his work on photoelectric effect. -
Ernest Rutherford
A British physicist who came to be known as the father of nuclear physics. -
Max Planck
A German theoretical physicist whose discovery of energy quanta won him the Nobel Peace Prize in physics in 1918. -
Niels Bohr
A Danish physicist who made foundational contributions to understanding atmoic structure and quantam theory. -
Arthur Compton
An American physicist who won the Nobel Peace Prize in 1927 for his discovery of the Compton effect in 1923. The Compton effect demonstrated the particle nature of electromagnetic radiation. -
Louis de Broglie
A French physicist who made groundbreaking contributions to the quantum theory. -
Werner Heisenberg
A German theoretical physicist and one of the key pioneers of quantam mechanics. -
Erwin Schrodinger
A Noble Peace Prize-winning Austrian physicist who developed a number of fundamental results in the filed of quantum theory. -
James Chadwick
British physicist who was awarded the 1935 Nobel Peace Prize in physics for his discovery on the neutron in 1932. -
Murray Gell-Mann
An American physicist who received the 1969 Nobel Peace Prize in physics for his work on the theory of elementsry particles. -
Carlo Rubbia
An Italian particle physicist and inventor who was awarded the Nobel Peace Prize in 1984 for his work leading to the discovery of the W and Z particles. -
Peter Higgs
A British theoretical physicist that was awarded the Nobel Peace Prize for his work on the mass of subatomic particles.
