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| | Archimedes - Crystalinks |
 | | He also invented things such as the hydraulic screw - for raising water from a lower to a higher level, catapult, the lever, the compound pulley and the burning mirror. |
 | | In mechanics Archimedes discovered fundamental theorems concerning the center of gravity of plane figures and solids. |
 | | Archimedes probably spent some time in Egypt early in his career, but he resided for most of his life in Syracuse, the principal city-state in Sicily, where he was on intimate terms with its king, Hieron II. |
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