Albert Einstein was born March 14,1879 in Ulm, Germany. He is considered to be one of the greatest theoretical physicists of all time. He is best known as the creator of the special and general theories of relativity. He contributed much to the kinetic theory of matter and the theory of spe...

The Twins Paradox uses Einstein's Theory of Special Relativity to explain that time travel is possible. Let's say two twins are on Earth. They are both twenty years old. One leaves in a spaceship. She is gone for sixty years. When she returns the twin that remained on Earth is eighty years old, ...

1832 - 1903 Rudolf Lipschitz was born in 1832 into a wealthy family in the German village of Bonkein, near Konigsberg, which today is the Russian...