Archimedes Heat Ray, Siege of Syracuse, 212 BC

Numéro d’image : 12631482
Archimedes Heat Ray, Siege of Syracuse, 212 BC
The 2nd century AD author Lucian wrote that during the Siege of Syracuse Archimedes destroyed enemy ships with fire. The device, sometimes called the Archimedes heat ray, was used to focus sunlight onto approaching ships, causing them to catch fire. This weapon has been the subject of ongoing debate about its credibility since the Renaissance. It has been suggested that a large array of highly polished bronze or copper shields acting as mirrors could have been employed to focus sunlight onto a ship. This would have used the principle of the parabolic reflector in a manner similar to a solar furnace. Archimedes of Syracuse (287-212 BC) was a Greek mathematician, physicist, engineer, inventor, and astronomer. Among his advances in physics are the foundations of hydrostatics, statics and an explanation of the principle of the lever. He is credited with designing innovative machines, including siege engines and the screw pump that bears his
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Crédit: Science Photo Library / Science Source
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