Photo of Albert Einstein. Click on image for full size (214K GIF) Courtesy of Tracey Keifer. Emilio Segre Visual Archives. American Institute of Physics.

Albert Einstein was a German physicist who lived between 1879-1955. He is probably the most well-known scientist in recent history.

Have you heard of Einstein's famous theory? It is called the theory of relativity.

Einstein introduced many amazing and unbelievable ideas which changed the entire field of physics. He made predictions about the properties of light, energy, and matter, and nearly all were proven true years later.