Albert+Einstein+LC.

Albert Einstein 14 March 1879 – 18 April 1955) was a German-born [|theoretical physicist] who developed the theory of [|general relativity], effecting a revolution in [|physics] . For this achievement, Einstein is often regarded as the father of [|modern physics] and one of the most prolific [|intellects] in human history. He received the [|1921] [|Nobel Prize in Physics] "for his services to theoretical physics, and especially for his discovery of the law of the [|photoelectric effect] . Near the beginning of his career, Einstein thought that [|Newtonian mechanics] was no longer enough to reconcile the laws of [|classical mechanics] with the laws of the [|electromagnetic field]. This led to the development of his [|special theory of relativity]. He realized, however, that the principle of relativity could also be extended to, and with his subsequent theory of gravitation. He continued to deal with problems of [|statistical mechanics] and [|quantum theory], which led to his explanations of [|particle theory] and the [|motion of molecules]. He also investigated the thermal properties of light which laid the foundation of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial;">[|photon] theory of light. He was visiting the United States when came to power in 1933, and did not go back to Germany, where he had been a professor at the. He settled in the U.S., becoming a citizen in 1940. On the eve of World War II, he helped alert President that Germany might be developing an atomic weapon, and recommended that the U.S. That begin similar research; this eventually led to what would become the. Einstein was in support of defending the Allied forces, but largely denounced using the new discovery of as a weapon.