Albert Einstein, one of the greatest scientists of modern age, was born of Jewish parents in Germany in 1879 A.D. At the age of twenty one he graduated from the Federal institute of Technology, Zurich Two years later he joined a service in Berne. He obtained his Doctorate in 1905 A.D. Four years after his Doctorate he took the post of Associate Professor at he University of Zurich, He resigned the next year to become a full Professor at a German University, He received the 1921 Nobel Prize in Physics When Hitler became Chancellor of Germany in 1933, Einstein was in America as a Visiting Professor, For Hitler's cruelty to Jews, he did not return to his homeland. Einstein became famous for his Theory of Relativity. At he request of a group of scientists he wrote to the American President Roosevelt to use atomic energy bombs .