Archimedes was born in Syracuse in 287 BC and died in 212 BC during the Roman occupation. He was the son of an Astronomer named Phidias sparingly and maintained friendly relations with the tyrant Hieron of Syracuse the second. The majority of his life was to move in Syracuse, Sicily. At a young age he travelled to Alexandria, Egypt to visit the impressive library of polis. Where he stayed for some time and made acquaintance with the circle of scientists who had created Euclid. He got close with Sammy Mathematical Conon, who respected his judgment, the student Dositheos and librarian of Alexandria Eratosthenes, who began with the geography, astronomy, mathematics and the chronological literary studies. Archimedes devoted his entire life to research. He perceived the phenomenon of reflection and refraction of light and designed the concave mirrors with which fired the Roman fleet that attempted to capture Syracuse. He discovered the principle of hydrostatic shouting the familiar "??????" (Eureka - I have found it) leaping naked from his bath, he noticed how water would splash out of his bath tub the moment he stepped into it, and the more he stepped into the tub, even more water got displaced. Study the lever and the importance of saying "??? ??? ????? ?? ????? ??? ?? ?????? ??? ??? ??" (give me place to stand and I will move and the earth). Perfected systems lifting weights and working with wheels and bolts (screws). ?? wisely said this phrase, because with a system of gears, pulleys and levers he manages all alone to haul a heavy warship and thereby proved the value of his theories in Hieron. Archimedes was killed in 212 BC during the capture of Syracuse by the Romans in the Second Punic War after all his efforts to keep the Romans at bay with his machines of war had failed. Although there is no evidence about how Archimedes died. It is said that before he was killed told the Roman who found him studying "non-disturbed my circles."