### Watch Albert Einstein Explain His Theory of Relativity in Historic Footage

In this historic footage, you can watch Albert Einstein describe the scientific equation that made him famous.

In this historic footage, you can watch Albert Einstein describe the scientific equation that made him famous.

Using these 15 clues, see if you can figure out the answer to Albert Einstein’s famously tricky house riddle.

Once a lowly patent clerk, Albert Einstein changed the world with his theories of special and general relativity.

Unlike simple equations like the quadratic equation, most equations do not have nice, simple, general solutions.

“I am doing quite well, in spite of all the anti-Semites among my German colleagues," he reassured his sister.

In addition to being one of the world's greatest thinkers, Albert Einstein was also quite the philosopher. These are just a few of his many brilliant quotes.

The Einstein Papers Project made more than 5000 of the famous scientist's documents freely available online, in both their original language and in translated text.