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Atomic
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Leucippus, 1st Theory of Atomism
Leucippus or Leukippos was the first Greek to develop the theory of atomism — the idea that everything is composed entirely of various imperishable, indivisible elements called atoms — which was elaborated in far greater detail by his pupil and succe... |
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Democritus, 1st Atomic Theory
Democritus ("chosen of the people") was an Ancient Greek philosopher born in Abdera, Thrace, Greece. He was an influential pre-Socratic philosopher who formulated an atomic theory for the cosmos. His exact contributions are difficult to disentangle f... |
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Epicurus, Pleasure is the Highest Good
Epicurus was born in the Greek colony on Samos, but spent most of his active life in Athens, where he founded yet another school of philosophy. At "the Garden," Epicurus and his friends lived out their ideals for human life, talking about philosophic... |
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Algazel (Al-Ghazali), Persian Scholar
Al-Ghazali known as Algazel to the western medieval world, born and died in Tus, in the Khorasan province of Persia (modern day Iran). He was a Muslim theologian, jurist, philosopher, and mystic of Persian origin and remains one of the most celebrate... |
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Pierre Gassendi, French Scientist
Pierre Gassendi was a French philosopher, priest, scientist, astronomer/astrologer, and mathematician, best known for attempting to reconcile Epicurean atomism with Christianity and for publishing the first official observations of the Transit of Mer... |
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Lavoisier, Father of Modern Chemistry
Antoine-Laurent de Lavoisier, the father of modern chemistry, was a French noble prominent in the histories of chemistry and biology. He stated the first version of the law of conservation of mass, recognized and named oxygen (1778) and hydrogen (178... |
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John Dalton, First Useful Atomic Theory
John Dalton developed the first useful atomic theory of matter around 1803. In the course of his studies on meteorology, Dalton concluded that evaporated water exists in air as an independent gas. He wondered how water and air could occupy the same s... |
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J. J. Thomson, Discovers the Electron, 1897
In 1897 in Cambridge, J J Thomson experimented on cathode rays. In Britain, physicists had argued these rays were particles, but German physicists disagreed, thinking they were a type of electromagnetic radiation. Thomson showed that cathode rays wer... |
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Max Planck, Inventor of Quantum Theory
Max Karl Ernst Ludwig Planck was a German physicist who is considered to be the inventor of quantum theory. In 1899, he discovered a new fundamental constant, which is named Planck's constant, and is, for example, used to calculate the energy of a ph... |
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Rutherford, Father of Nuclear Physics
Ernest Rutherford, 1st Baron Rutherford of Nelson OM PC FRS, widely referred to as Lord Rutherford, was a chemist (B.Sc. in chemistry and geology 1894, Canterbury College, New Zealand) and a physicist who became known as the "father" of nuclear physi... |
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Albert Einstein, Relativity Theory - 1905
Einstein's contributions to physics began in 1905 with three major results: the explanation of Brownian motion in terms of molecules; the explanation of the photoelectric effect in terms of the quantum; and the special theory of relativity that links... |
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Niels Bohr, Quantum Theory of Matter
Niels Henrik David Bohr was a Danish physicist who made fundamental contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922. He was also part of the team of physicists working on... |
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Harry Truman, 33rd President USA
Harry Truman was president of America (1945-1952) after the death of F.D. Roosevelt in April 1945. Harry Truman gave the order for the atomic bombs to be dropped on Hiroshima and Nagasaki and he represented the United States at Potsdam, the last of t... |
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Werner Heisenberg, Uncertainty Principle
Werner Heisenberg was one of the greatest physicists of the twentieth century. He is best known as a founder of quantum mechanics, the new physics of the atomic world, and especially for the uncertainty principle in quantum theory. He is also known f... |
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John von Neumann, Mathematician
John von Neumann was a Hungarian American mathematician who made major contributions to a vast range of fields, including set theory, functional analysis, quantum mechanics, ergodic theory, continuous geometry, economics and game theory, computer sci... |
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