Theory of Relativity

Are you confused about the theory of relativity? Still not completely sure what it is? Here is the definition from the master himself:

Put your hand on a hot stove for a minute, and it seems like an hour. Sit with a pretty girl for an hour, and it seems like a minute. That's relativity.

Albert Einstein, 03/14/1879 - 04/18/1955
Nobel Prize Laureate (Physics)

Here is a great explanation of a common question about relativity..