In 1939, Einstein and Leo Szilard wrote a letter to President Roosevelt warning Germany may conduct nuclear weapons research, and invited the United States to start its own research on atomic energy. The following year, he and Szilard established the Emergency Committee of Atomic Scientists. In 1947, Einstein married in an article in Atlantic Monthly and cooperated with the United Nations to protect nuclear weapons as a deterrent. He established the Emergency Committee of Atomic Scientists and supported the anti-hydrogen bomb of the Manhattan Project scientist J. Robert Oppenheimer. In 1921, he received the Nobel Prize for his work on the photoelectric effect, as his work on the theory of relativity remained controversial at the time. Based on special relativity, he proposed a theory of gravity and in 1916 published his paper on general relativity. As a physicist, Einstein made many discoveries, but is perhaps best known for his theory of relativity and the equation E = MC2, which foreshadowed the development of atomic energy and the atomic bomb. Einstein developed special and general relativity, which helped to complicate and expand the theories put forward by Isaac Newton over 200 years ago. His research ranged from quantum mechanics to theories of gravity and motion. After publishing several groundbreaking articles, Einstein toured the world and talked about his discoveries. Making a name for himself with four scientific papers published in 1905, he became world famous for his general theory of relativity and won the Nobel Prize in 1921 for explaining a phenomenon known as the photoelectric effect. In 1905, Einstein received his Ph.D. in physics from the University of Zurich and published three scientific articles, each of which had a profound impact on the field of physics. In 1915, Einstein published four papers describing his general theory of relativity, updating Isaac Newton's law of universal gravitation, and explaining that gravity is caused by the deformation of space-time structure caused by massive objects. Einstein believed that the laws of classical mechanics were no longer consistent with the laws of electromagnetic fields, which prompted him to develop his special theory of relativity. The latter contributed to the creation of quantum theory. Einstein believed that Newtonian mechanics is no longer sufficient to coordinate the laws of classical mechanics and the laws of electromagnetic fields. His general theory of relativity changed our understanding of space and time, becoming one of the two pillars of modern physics and the other pillar of quantum mechanics. His theory of relativity describes the dynamics of light and supermassive objects, and is one of the pillars of modern physics. His work in quantum mechanics focuses on the subatomic field. Since the general theory of relativity was confirmed in 1919, Einstein has become one of the most famous scientific celebrities . Einstein was active in physics in the last few years of his life. During this period, he also contributed to the problems of radiation theory and statistical mechanics. When Einstein's wife Elsa died in 1936, he was involved for more than ten years in his efforts to find a unified field theory that would combine all the laws of the universe and the laws of physics into one structure. In the process, Einstein became increasingly isolated from many of his colleagues, who focused primarily on quantum theory and its implications, rather than the theory of relativity. After World War II, Einstein continued to work on key aspects of his unified field theory and general relativity, including time travel, wormholes, black holes, and the origin of the universe. Einstein brought his work on general relativity to the Netherlands, and then a physicist friend transported them from there to the North Sea to England, where they eventually reached Arthur Eddington, and he might He is the only astronomer with political influence and scientific relevance in the world. Enough to mobilize. Wartime resources and test general relativity. His first special relativity paper was also published in 1905, which changed the world. The physicist then renounced his German citizenship and moved to the United States to become a professor of theoretical physics at Princeton. They subsequently moved to Italy and Albert continued his education in Aarau, Switzerland, and in 1896 he entered the Swiss Federal Polytechnic School in Zurich to be educated as a physics and mathematics teacher. After receiving the position of clerk at the Swiss patent office in Bern, Einstein married Marik in 1903; they will have two more children, Hans Albert and Edward . Einstein was a professor at the University of Berlin for a time, but fled Germany with Lowenthal in 1933, during the ascent of Adolf Hitler. He received many awards in recognition of his work, including the Royal Society of London Copley Medal in 1925 and the Franklin Medal of the Franklin Institute in 1935. Einstein's membership at the Institute for Advanced Study lasted until his death in 1955. Physicist Albert Einstein was one of the first faculty members of the Institute, working from 1933 until his death in 1955, and played a significant role in its early development. Albert Einstein received honorary degrees in science, medicine and philosophy from many European and American universities. Considered by many to be the greatest scientist of the twentieth century, Albert Einstein revolutionized scientific thinking by creating new theories of space, time, mass, motion, and gravity. Einstein is generally considered the most influential physicist of the 20th century. Albert Einstein is a German-born physicist who developed the theories of special and general relativity and received the Nobel Prize in physics. in 1921 for explaining the photoelectric effect. Einstein is also known for his theory of general relativity and the photoelectric effect ; his work on the latter earned him the Nobel Prize in Physics in 1921. Einstein also tried to combine all the forces of the universe into a single theory or theory of everything, but he was still studying this theory when he died, but to no avail. Einstein was born on March 14, 1879 in Ulm, Germany, a city with only over 120,000 residents. His father, Hermann Einstein, was a feather salesman at first, and later ran an electrochemical factory with some success. He has an older sister, Maria , who was born two years later than Albert. Einstein divorced Malik in 1919 and soon married his cousin Elsa Lowenthal, with whom he had been in a relationship since 1912. D. 1955. Although he was best known for his formula for the equivalence of mass and energy E = mc2 , in 1921 he received the Nobel Prize in Physics "for his theoretical work. physics, and especially for the discovery of the law of the photoelectric effect. " Since no observational evidence of a dynamic universe was known at the time, Einstein coined a new term, the cosmological constant, into the field equations to allow the theory to predict a static universe.