-
500 BCE
The Alchemist
The Alchemists were a group of men who believed that you could turn ordinary metals into gold. -
460 BCE
Democritus
Democritus was a Greek philosopher who elaborated a system originated by Leucippus into a material account of the natural world. -
429 BCE
Plato
Plato was an Athenian philosopher during the classical period in Ancient Greece. He founded the Platonists. -
385 BCE
Aristotle
Aristotle was one of the biggest figures in ancient Greek Philosophy, he made important contributions to logic, criticism, rhetoric, physics, biology, psychology, math, metaphysics, ethics, and politics. He was also a student of Plato for 20 years but is mostly famous for rejecting Plato's theory of forms. -
Robert Boyle
Robert Boyle proposed a law that states that the volume of gas decreases as the pressure increases, proportionally. -
Lavoisier
Lavoisier was an experimenter who revolutionized the world of chemistry due to his discoveries of, Oxygen, Nitrogen, Silicon, and Carbon. -
John Dalton
John Dalton was a school teacher, and a meteorologist. He was overall best known for creating the theory of atomism, and found out ways to calculate atomic mass. -
J.J. Thompson
J.J. Thompson discovered the electron by experimenting with crooks, or cathode ray. He demonstrated that cathode rays were negatively charged. -
Dmitri Mendeleev
Mendeleev was a Russian chemist who jotted down the symbols for the chemical elements, and put them in order according their mass. He also was the founder of the periodic table. -
Albert Einstein
Albert Einstein was a German physicist who proposed the theory of "General Relativity". -
The Curies
The Curies discovered the elements of polonium and radium. -
Henry G.J. Mosely
In 1913 Mosely used his own self built equipment to prove that every element's identity is uniquely determined by the number of protons it has. -
Niels Bohr
He proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only by certain well defined quantities. -
Robert Millikan
Millikan is famous for measuring the charge of the electron in his famous oil drop experiment which has revolutionized what we think of the atom . -
Werner Heisenberg
Heisenberg contributed to the atomic theory through formulating quantum mechanics in terms of matrices and in discovering the uncertainty principle. -
Ernest Rutherford
Ernest Rutherford postulated the nucleus of the atom, and proposed the laws of radioactive decay.
