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Antoine Lavoisier
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Joseph-Louis Proust
Proved that the relative quantities of any given pure chemical compound’s constituent elements remain invariant, regardless of the compound’s source. This is known as Proust’s law. -
Heinrich Hertz
He produced electromagnetic waves in the laboratory and measured their length and velocity. -
Sir JJ Thomson
Discovered the electron. -
Max Planck
Originated quantum theory. -
Marie and Pierre Curie
Won Nobel Peace Prize in Physics for discovery of radium and polonium in their investigation of radioactivity. -
Sir JJ Thomson
Won Nobel Peace Prize in Physics. -
Ernest Rutherford
Won Nobel Peace Prize in Chemistry. -
Ernest Marsden
Reported that alpha particles from a radioactive source were occasionally deflected more than 90° when they hit a thin metal foil. This observation helped Rutherford develop the nuclear model of the atom. -
Niels Bohr
Discovered that the atom consists of a heavy positively charged nucleus with substantially lighter negatively charged electrons circling around it at considerable distance. -
Albert Einstein
Einstein completed his General Theory of Relativity. -
Max Planck
Won Nobel Peace Prize in Physics. -
Albert Einstein
Won Nobel Peace Prize in Physics. -
Niels Bohr
Won the Nobel Peace Prize -
Arthur Compton
The so-called Compton effect is caused by the transfer of energy from a photon to an electron. -
James Chadwick
He worked with Ernest Rutherford in the Cavendish Laboratory, Cambridge, where they studied the transmutation of elements by bombarding them with alpha particles and investigated the nature of the atomic nucleus, identifying the proton, the nucleus of the hydrogen atom, as a constituent of the nuclei of other atoms. -
Louis de Broglie
Broglie developed his revolutionary theory of electron waves. -
Werner Heisenberg
Discovered a way to formulate quantum mechanics in terms of matrices. -
Irene Joliot-Curie
Synthesized new radioactive elements. -
Hans Geiger
He used his counter to confirm the existence of light quantum, or packets of energy. -
Wolfgang Pauli
Discovered that in an atom no two electrons can occupy the same quantum state simultaneously. -
Arthur Compton
Nobel Prize for Physics for his discovery and explanation of the change in the wavelength of X rays when they collide with electrons in metals. -
Paul Dirac
Relativistic quantum theory of the electron. -
Louis de Broglie
Won Nobel Peace Prize in Physics. -
James Chadwick
In 1932 Chadwick observed that beryllium, when exposed to bombardment by alpha particles, released an unknown radiation that in turn ejected protons from the nuclei of various substances. Chadwick interpreted this radiation as being composed of particles of mass approximately equal to that of the proton, but without electrical charge—neutrons. -
Werner Heisenberg
Awarded the Nobel Prize for Physics. -
Paul Dirac
Won Nobel Prize for Physics. -
Erwin Schrodinger
Won Nobel Peace Prize in Physics. -
James Chadwick
Received the Nobel Prize for Physics -
Irene Joliot- Curie
Shared Nobel Peace Prize in Chemistry with her husband. -
Carl David Anderson
Won the Nobel Peace Prize for Physics his discovery of the positron, or positive electron, the first known particle of antimatter. In 1936 Anderson discovered the mu-meson, or muon, a subatomic particle 207 times heavier than the electron. -
Enrico Fermi
Won Nobel Peace Prize for Physics. -
Lise Meitner and Otto Hahn and Fritz Strassman
Became the first to recognize that the uranium atom, when bombarded by neutrons, actually split. -
Otto Frisch
Described the division of neutron-bombarded uranium into lighter elements and named the process fission. -
Wolfgang Pauli
Won Nobel Peace Prize in Physics. -
Richard Feynman and Julian Schwinger
Co-winners of the Nobel Peace Prize in Physics.
