Albert Einstein (March 14, 189 - April 17, 1955) was a German-born Nobel Prize-winning physicist. He is best known for his famous theory of relativity and especially his discovery of the law of mass-energy equivalence. He was awarded the Nobel Prize in Physics in 1921. He was cited for his contributions to theoretical physics and for his research on photoelectricity.
Einstein has done a lot of research in various fields of physics and contributed a lot to new inventions and discoveries. The most famous special theory of relativity integrated mechanics and electromagnetism, and the general theory of relativity established a new theory of gravitation by applying the theory of relativity to unequal motion. His other contributions include the cosmology of relativity, capillary action, chronological perceptual chromaticity, the classical problems of statistical mechanics and their application to quantum theory, an explanation of the Brownian motion of molecules, the probability of molecular transitions Photon laid the foundations of the theory), a theory of radiation that also included the subject of stimulated emission, the first concept of an integrated field theory and the geometry of physics.
Adolf Hitler came to power in Germany in 1933, when he was a professor at the Berlin Academy of Sciences. Being Jewish, Einstein emigrated to the United States at that time and never returned to Germany. He settled in the United States and received American citizenship in 1940. He wrote a letter to US President Franklin D. Roosevelt before the start of World War II. In the letter, he warned that Germany could "make a different kind of impossibly powerful bomb" and urged the United States to launch a similar study. It was through this letter that the work on the Manhattan Project began. Although Einstein supported the Allies, he was against the use of the atomic bomb. Later, along with the British philosopher Bertrand Russell, Russell-Einstein wrote the Manifesto on the dangers of the atomic bomb. Until his death in 1955, he was associated with Princeton University's Institute of Advanced Study.
Einstein's research work is contained in more than 50 scientific papers and some non-scientific books. In 1999, Time magazine named Einstein "the man of the century." Also known by a vote of famous physicists, he is recognized by almost everyone as the best physicist of all time. The word "Einstein" is now used to refer to someone or something who is gifted and intelligent in general culture and in everyday use. That is, it is synonymous with merit.