Respuestas
Albert Einstein ( 14 of March of 1879 - Princeton , United States , 18 of April of 1955 ) was a physicist German origin Jew , nationalized after Swiss , Austrian and American . He is considered the most important scientist , known and popular of the twentieth century .
In 1905, when he was a young unknown physicist, employed in the Patent Office of Berne , he published his theory of special relativity . In it, he incorporated, in a simple theoretical framework based on simple physical postulates, concepts and phenomena studied by Henri Poincaré and Hendrik Lorentz . As a logical consequence of this theory, he deduced the most popular equation of physics at the popular level: the mass-energy equivalence, E = mc² . That year he published other works that would lay some of the foundations of statistical physics and quantum mechanics .
In 1915, he presented the theory of general relativity , in which he completely reformulated the concept of gravity . One of the consequences was the emergence of the scientific study of the origin and evolution of the Universe by the branch of physics called cosmology .