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Antoine Lavosier
lavosier discovers that matter cannot be lost or gained in a chemical reaction -
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Joesph Proust
Proust's best known work was derived from a controversy with C.L. Berthollet. Berthollet did not believe that substances always combine in constant and definite proportions as Proust did. Proust eventually was able to prove Berthollet wrong in 1799 and published his own hypothesis -
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John Dalton
Dalton comes up with his atomic theory -
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William Crookes
showed that cathode rays deflected off magnets -
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JJ Thompson
Showed that cathode rays were composed of a previously unknown negatively charged particle, and thus is credited with the discovery and identification of the electron -
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Max Planck
German theoretical physicist who originated quantum theory, -
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Marie Curie
Her achievements included a theory of radioactivity a term that she coined, techniques for isolating radioactive isotopes, and the discovery of two elements, polonium and radium. -
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Ernie Rutherford
In early work he discovered the concept of radioactive half-life, thenthe gold foil experiment -
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Albert Einstein
German-born theoretical physicist who developed the general theory of relativity, one of the two pillars of modern physics While best known for his mass–energy equivalence formula E = mc2,he received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect" The latter was pivotal in establishing quantum theory -
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Neils Bohr
Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete, and that they revolve in discrete, stable orbits around the atomic nucleus, much like to planets around the sun, except that they can jump from one energy level to another -
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Erwin Schroedinger
was an Austrian physicist who developed a number of fundamental results in the field of quantum theory, which formed the basis of wave mechanics: he formulated the wave equation and revealed the identity of his development of the formalism and matrix mechanics. -
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James Chadwick
discovery of the neutron and help make the atom bomb. -
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Louis de Broglie
French physicist who made groundbreaking contributions to quantum theory. In his 1924 PhD thesis he the wave nature of electrons and suggested that all matter has wave properties. -
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Friedrich Hund
Hund's cases, which are particular regimes in molecular angular momentum coupling, and Hund's rules, which govern electron configurations, are important in spectroscopy and quantum chemistry. In chemistry, the first rule, Hund's rule of maximum multiplicity, is especially important and is often referred to as simply Hund's Rule. -
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Werner Heiesenberg
German theoretical physicist and one of the key creators of quantum mechanics. -
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Peter Higgs, Robert Brout, François Englert, Gerald Guralnik, Carl Hagen, Thomas Kibble
six theoretical physicists hypothesized a new field (like an electromagnetic field) that would permeate all of space and solve a critical problem for our understanding of the universe.