Albert Einstein

Who- Albert Einstein was a German born theoretical physicist.
What- He developed the general theory of relativity and is best known for his mass-energy formula E=mc^2 which has been renounced as "the world's most famous equation".
When- He was born in 1887 and died in 1916's, and became a citizen of america in the 1940's.
Where- He was a professor at the Berlin academy of sciences and came to america when Hitler came to power.
Why- Einstein thought that the laws of newton where no longer enough to reconcile classical mechanics with the laws of electromagnetic fields which led to the development of his theory of relativity.

Links-http://en.wikipedia.org/wiki/Albert_Einstein , picture