The Hero of Alexandria, a Mathematician, Physicist and Engineer (10-70AD) wrote a book titled Automata (Arabic translation, or in Greek “moving itself”) which is a collection of different devices which could have been used in temples. The Hero of Alexandria designed an odometer to be mounted on a cart and measure distances traveled. Among his other inventions are a wind- powered organ, animated statues and the Aeolipile. Although conceived simply as a trinket, the Aeolipile can be considered the forefather of modern steam engines. [8]