In today’s age of digital electronics, it is important to remember how much can be done with something as simple as a gear. While gears are in many everyday devices, such as watches, cars, and agricultural equipment, most people take them for granted. However, without gears, we would not be able to use any of the aforementioned devices and many other things that make our lives easier. In fact, if not for gears, we would not have been able to win World War 2, or send the space shuttle into the heavens.

A gear is usually a circular piece of metal with teeth. Meshing a gear’s teeth with those of another gear allows for torque to be transmitted. Mankind first mastered the gear in ancient times. However, today’s gears are a far cry from the gears the ancient Greeks would have used. Thanks to modern gear manufactu