Monday, April 24, 2017
Great Alexander diving bell
Alexander the Great's diving bell. 15th-century manuscript illustration of the 4th-century BC ruler Alexander the Great (356 BC-323 BC) being lowered into the sea in a glass barrel, an early form of diving bell. Alexander, from Macedon, become emperor of most of the known world. He was a student of the Ancient Greek philosopher Aristotle who mentions diving bells, and Alexander is said to have used them in the siege of
Time line underwater exploration
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