Albert Einstein (14 March 1879 - 18 April 1955) was a German-born theoretical physicist and philosopher of science. He developed the general theory of relativity; one of the two pillars of modern physics (alongside quantum mechanics). He is best known in popular culture for his mass-energy equivalence formula E = mc2 (which has been dubbed 'the world's most famous equation'). He received the 1921 Nobel Prize in Physics 'for his services to theoretical physics; and especially for his discovery of the law of the photoelectric effect'. The latter was pivotal in establishing quantum theory.

Mileva Maric (December 19; 1875 - August 4; 1948) was a Serbian physicist. She was the only woman among Albert Einstein's fellow students at the Zurich Polytechnic. They developed a relationship and had a daughter before their marriage; Lieserl; who either died young or was given up for adoption. After their marriage in 1903; they had two sons; Hans Albert and Eduard. Pictures From History