History of Physics and Astronomy

This version sorts the important events by name. The lifetimes of people are highlighted in blue, important people are in bold blue.

E

Earthquake waves used by Oldham to prove that the Earth has a core 1906
Eclipse of the Sun 1560
Eddington 1882-1944
Eight fold way 1961
Einstein 1879- 1955
Einstein – Nobel prize for Physics 1921
Electric arc – Humphrey Davy 1801
Electric charge - distinction between positive and negative - Charles du Fay 1733
Electric motor - Faraday 1821
Electric motor – Jacobi 1834
Electric light bulb – Edison 1878
Electrolysis – Faraday's laws 1832
Electromagnetic induction 1824
Electromagnetic theory – Maxwell 1864
Electromagnets - Sturgeon 1820
Electron – particle named by Stoney who also estimated its mass 1874
Electron – name proposed for the fundamental unit of charge (?)1881
Electron – negative energy states – Dirac 1928
Electron – relativistic quantum mechanical description - Dirac 1928
Electron diffraction – Davisson, Germer and Thomson 1927
Electron- microscope 1931
Electron microscope – Ruzcka 1937
Electron spin – Uhlenbeck and Goudsmit 1925
Electronic computer developed - Turing 1943
Electronic computer – ENIAC – general purpose 1946
Electrons 'discovered' – J.J.Thomson 1897
Electroscope – Haukesbee 1705
Electrostatic accelerator – Cockcroft and Walton 1929
Electro-weak forces – unification. Weinberg and Salam 1967
Element 104 discovered 1968
Elliptical orbits – Sommerfield 1916
Empedocles- optical tentacles theory of vision 444 BC
Enigma decoded – Bletchley park 1943
Entropy idea proposed Clapeyron 1834
Entropy – Clausius 1865
Eratosthenes – size of the Earth- 24000 miles 275-194 BC
Eta 0 discovered 1962
Euclid – laws of reflection of light 300 BC
Eudoxus – spheres theory 400-355 BC
Everest- first ascent – Hilary and Tensing 1953
Expansion – thermal - Henning's method 1907
Expansion of Universe demonstrated - Hubble 1929
Explorer I 1958