Where was Einstein born a few years later and when did he try to immigrate to the United States?

Albert Einstein (German: Albert Einstein,1879 March14-1955 April18), a Jewish theoretical physicist and scientific philosopher in the 20th century [2][3], founded one of the two pillars of modern physics (the other pillar is quantum physics). Einstein found that the mass-energy equation E = mc2 is the most famous in the world (the world calls it "the most famous equation in the world") [5], and he also took a key step for the establishment of quantum theory because of his contribution to theoretical physics, especially the discovery of photoelectric effect, and won the 192 1 Nobel Prize in Physics. [6]

Early in his career, Einstein discovered that classical mechanics and electromagnetic fields could not coexist, so he developed the special theory of relativity. He also found that the principle of relativity can be extended to the modeling of gravity field. Based on some theories of gravity, he published his general theory of relativity in 19 15. He continued to study statistical mechanics and quantum theory, which led him to give explanations of particle theory and molecular motion. 19 17, Einstein established a large-scale structural universe model by applying general relativity. [7]

When Adolf Hitler became German Chancellor in 1933, Einstein was visiting the United States. Although he was a professor at the Prussian Academy of Sciences at that time, he did not return to Germany because he was Jewish. /kloc-settled in the United States in 0/940 and became an American citizen [8]. On the eve of World War II, he signed a letter addressed to the then American President franklin roosevelt. This letter mentioned that Germany might develop a new and powerful bomb, and suggested that the United States should also conduct relevant research as soon as possible, so the United States launched the Manhattan Project. Einstein supported the strengthening of the Allies, but condemned the idea of using the newly discovered nuclear fission for weapons. Later, Einstein and the British philosopher Bertrand Russell signed the Russell-Einstein Declaration, which emphasized the danger of nuclear weapons.