Albert Einstein Einstein did not return to Germany. He settled in the United States and became an American citizen in 1940. On the eve of World War II, he endorsed a letter to President Franklin D. Roosevelt alerting him to the potential development of "extremely powerful bombs of a new type" and recommending that the US begin similar research. This eventually led to the Manhattan Project. Einstein supported the Allies, but he generally denounced the idea of using nuclear fission as a weapon. He signed the Russell–Einstein Manifesto with British philosopher Bertrand Russell, which highlighted the danger of nuclear weapons. He was
UNESCO Albert Einstein medal physics. First, his most famous equation - "E = mc²". The second equation represents Einstein's research into the photoelectric effect, for which he was awarded the Nobel Prize in Physics in 1921, "hν = P + 1/2 mv²". The third is related to his work on the general theory of relativity, "R + 1/2 gR = κT". Below these is an autograph of a scientist. Medal executed in gold, silver and bronze. UNESCO Albert Einstein medal The UNESCO Albert Einstein Medal is awarded to outstanding scientific personalities who made a great contribution to science and international scientific cooperation. The medal