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| | Inventor of the Week: Archive |
 | | Archimedes was also a talented inventor, having created such devices as the catapult, the compound pulley, the lever, and a system of burning mirrors that was used in battle to focus the sun’s rays on enemies’ ships. |
 | | Archimedes also created a model planetarium, designed a system for expressing large numbers, and made many advances in the understanding of geometry, creating major writings on the sphere and cylinder, spirals, plane equilibriums, conoids and spheroids, and measurement of circles. |
 | | Archimedes died in Syracuse in approximately 212 B.C., as the city was being sacked by the Roman army during the Second Punic War. |
| web.mit.edu /invent/iow/archimedes.html (483 words) |
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