Einstein Author:Mick Gowar Albert Einstein (14 March 1879-18 April 1955) was a theoretical physicist, philosopher and author who is widely regarded as one of the most influential scientists and intellectuals of all time. His many contributions to physics include the special and general theories of relativity, the founding of relativistic cosmology, the first post-Newtonia... more »n expansion, explaining the perihelion advance of Mercury, prediction of the deflection of light by gravity and gravitational lensing, the first fluctuation dissipation theorem which explained the Brownian movement of molecules, the photon theory and wave-particle duality, the quantum theory of atomic motion in solids, the zero-point energy concept, the semiclassical version of the Schrödinger equation, and the quantum theory of a monatomic gas which predicted Bose-Einstein condensation.« less