| Timeline |
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| 1904 CE | Albert Einstein develops the energy-frequency relation of light quanta. | |
| 1905 CE | Albert Einstein (1879-1955) completes and publishes his theory of special relativity. | |
| 1905 CE | Albert Einstein develops the light-quantum theory for photoelectric law. | |
| 1905 CE | Albert Einstein explains Brownian motion by kinetic theory. | |
| 1905 CE | Albert Einstein (1879-1955) postulated the equivalence of mass and energy in his law of mass-energy conservation (E=mc2). | |
| 1906 CE | Albert Einstein develops a quantum explanation of specific heat laws for solids. | |
| 1907 CE | Albert Einstein introduces the principle of equivalence of gravitation and inertia and uses it to predict the gravitational redshift of light. | |
| 1909 CE | Albert Einstein postulates particle-wave duality of photons. | |
| 1910 CE | Albert Einstein and Marian Smoluchowski find the Einstein-Smoluchowski formula for the attenuation coefficient due to density fluctuations in a gas. | |
| 1910 CE | Albert Einstein explains why the sky is blue. | |
| 1912 CE | Albert Einstein postulates curvature of space-time. | |
| 1915 CE | Albert Einstein (1879-1955) completes and publishes his theory of general relativity. | |
| 1915 CE | Albert Einstein predicts that light bends and an explanation for perihelion shift of mercury | |
| 1916 CE | Albert Einstein predicts gravitational waves. | |
| 1916 CE | Albert Einstein shows conservation of energy-momentum in general relativity. | |
| 1916 CE | Albert Einstein shows that the field equations of general relativity admit wavelike solutions. | |
| 1916 CE | Karl Schwarzschild solves the Einstein vacuum field equations for uncharged spherically symmetric systems. | |
| 1917 CE | Albert Einstein introduces the cosmological constant and a steady state model of the universe | |
| 1917 CE | Albert Einstein introduces the idea of stimulated emission and loss of determinism | |
| 1919 CE | Crommelin and Eddington verify Einstein's prediction of starlight deflection during an eclipse. | |
| 1919 CE | Einstein's light-bending prediction confirmed by Arthur Eddington. | |
| 1921 CE | T. Kaluza demonstrates that a five-dimensional version of Einstein's equations unifies gravitation and electromagnetism. | |
| 1921 CE | Albert Einstein lectures in New York on his new theory of relativity. | |
| 1922 CE | Alexander Friedmann finds a solution to the Einstein field equations which suggests a general expansion/oscillation of space. | |
| 1923 CE | George Birkhoff proves that the Schwarzschild spacetime geometry is the unique spherically symmetric solution of the Einstein vacuum field equations. | |
| 1923 CE | Louis de Broglie suggests that electrons may have wavelike properties as well as those of particles, supporting Einstein's theories. | |
| 1924 CE | Bose and Einstein develop the statistics of photons and Bose-Einstein condensate. | |
| 1924 CE | Satyendra Bose and Albert Einstein introduce Bose-Einstein statistical physics of quantum boson molecular gas.
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| 1926 CE | Albert Einstein states that 'God does not play dice' | |
| 1927 CE | Georges-Henri Lemaitre discusses the creation event of an expanding universe governed by the Einstein field equations | |
| 1931 CE | Albert Einstein discards the cosmological constant and postulates oscillating cosmology. | |
| 1931 CE | Albert Einstein urges all scientists to refuse military work | |
| 1932 CE | Albert Einstein and De Sitter postulate a Flat expanding cosmology. | |
| 1932 CE | Sir John Douglas Cockcroft of Great Britain and Ernest Thomas Sinton Walton of Ireland split lithium and boron nuclei using proton bombardment using a 700 keV linear accelerator built at Ernest Rutherford’s Cavendish Laboratory at Cambridge University. Their experiment proves Albert Einstein’s theory of relativity and verified the equivalence of mass and energy. | |
| 1932 CE | German physicist Albert Einstein is granted a US visa. | |
| 1933 CE | Albert Einstein arrives in the US, a refugee from Nazi Germany. | |
| 1935 CE | Albert Einstein, Boris Podolsky and Nathan Rosen put forth the EPR paradox of non-locality in quantum mechanics. | |
| 1937 CE | Albert Einstein, Leopold Infeld and Banesh Hoffman show that the geodesic equations of general relativity can be deduced from its field equations. | |
| 2 Aug 1939 CE | Albert Einstein - Teller and Szilard send a letter to President Roosevelt informing him of German atomic research and the potential for a bomb which prompts Roosevelt to form a special committee to investigate the military implications of atomic research. | |
| 1953 CE | Einstein announces revised unified field theory. | |
| 1955 CE | Albert Einstein (who died later this year) and Bertrand Russell issued a Manifesto warning of the dangers of continuing the nuclear arms race. | |
