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  2. History of atomic theory - Wikipedia

    en.wikipedia.org/wiki/History_of_atomic_theory

    Atomic theory is the scientific theory that matter is composed of particles called atoms. The definition of the word "atom" has changed over the years in response to scientific discoveries. The definition of the word "atom" has changed over the years in response to scientific discoveries.

  3. Timeline of atomic and subatomic physics - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_atomic_and...

    1936 Eugene Wigner develops the theory of neutron absorption by atomic nuclei; 1936 Hermann Arthur Jahn and Edward Teller present their systematic study of the symmetry types for which the Jahn–Teller effect is expected [8] 1937 Carl Anderson proves experimentally the existence of the pion predicted by Yukawa's theory.

  4. List of superseded scientific theories - Wikipedia

    en.wikipedia.org/wiki/List_of_superseded...

    Progression of atomic theory. Democritus, the originator of atomic theory, held that everything is composed of atoms that are indestructible. His claim that atoms are indestructible is not the reason it is superseded—as it was later scientists who identified the concept of atoms with particles, which later science showed are destructible.

  5. Timeline of physical chemistry - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_physical_chemistry

    Pais, Abraham ; Inward Bound – Of Matter & Forces in the Physical World, Oxford University Press (1986) ISBN 0-19-851997-4 Written by a former Einstein assistant at Princeton, this is a beautiful detailed history of modern fundamental physics, from 1895 (discovery of X-rays) to 1983 (discovery of vectors bosons at C.E.R.N.)

  6. Timeline of fundamental physics discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_fundamental...

    This timeline lists significant discoveries in physics and the laws of nature, including experimental discoveries, theoretical proposals that were confirmed experimentally, and theories that have significantly influenced current thinking in modern physics. Such discoveries are often a multi-step, multi-person process.

  7. Timeline of scientific discoveries - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_scientific...

    1864: James Clerk Maxwell: Theory of electromagnetism. 1865: Gregor Mendel: Mendel's laws of inheritance, basis for genetics. 1865: Rudolf Clausius: Definition of entropy. 1868: Robert Forester Mushet discovers that alloying steel with tungsten produces a harder, more durable alloy. 1869: Dmitri Mendeleev: Periodic table.

  8. Timeline of quantum mechanics - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_quantum_mechanics

    1963 – Eugene P. Wigner lays the foundation for the theory of symmetries in quantum mechanics as well as for basic research into the structure of the atomic nucleus; makes important "contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry ...

  9. Atomism - Wikipedia

    en.wikipedia.org/wiki/Atomism

    For example, in 1826 when Sir Humphry Davy presented Dalton the Royal Medal from the Royal Society, Davy said that the theory only became useful when the atomic conjecture was ignored. [75] English chemist Sir Benjamin Collins Brodie in 1866 published the first part of his Calculus of Chemical Operations [ 76 ] as a non-atomic alternative to ...