Archimedes was the greatest mathematician that ever lived. He was also known as "The Wise One", "The Master" and "The Great Geometer". Archimedes made great advancements in mathematics, science, mechanics, physics, hydrostatics, geometry, astronomy and engineering. Archimedes gave us exponents and calculated pi through the Method of Exhaustion. Through geometry, he gave us the principles for such basic devices as the pulley, the fulcrum and the lever – devices we still use today. Archimedes is credited with the principle of buoyancy, or the power of a fluid to exert an upward force on a body placed in it. His research into volume and density was fundamental to the development of theories of hydrostatics. Click Biography to learn more about Archimedes. For a quick fact sheet, click Achievements. If you're as hungry for more perspectives and articles about Archimedes then click Further Reading for suggested reading material.