paragraph on Albert Einsteinin words
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Albert Einstein (14 March 1879 –18 April 1955) was a German-born scientist. He worked on theoretical physics.[1] He developed the theory of relativity.[2][3] He received the Nobel Prize in Physics in 1921 for photoelectric effect. His famous equation is {\displaystyle E=mc^{2}} (E = energy, m = mass, c = speed of light).
Before his job, Einstein did not think Galileo Galilei's idea of Galilean invariance was not completely correct. Between 1902-1909 he developed the special theory of relativity to correct that. Einstein also thought that Isaac Newton's idea of gravity was not completely correct. So, he extended his ideas on special relativity to include gravity. In 1916 he published a paper on general relativity with his theory of gravitation.
In 1933, Einstein was visiting the United States. In Germany, Adolf Hitler and the Nazis came to power. Einstein, being of Jewish ethnicity, did not return to Germany due to the Hitler’s anti-Semitic policies and the Holocaust.[4] He lived in the United States and became an American citizen in 1940.[5] On the beginning of World War II, he sent a letter to President Franklin D. Roosevelt explaining to him that Germany was in the process of making a nuclear weapon; so Einstein recommended that the US should also make one. This led to the Manhattan Project, and the US became the first nation in history to create and use the atomic bomb (not on Germany though but Japan). Einstein and other physicists like Richard Feynman who worked on the Manhattan project later regretted that the bomb was used on Japan.[6]
Einstein lived in Princeton and was one of the first members invited to the Institute for Advanced Study, where he worked for the remainder of his life. He is widely considered the greatest physicist and one of the greatest scientists of all time. His contributions helped laid the foundations for all modern branches of physics, including quantum mechanics and relativity.