Mysteries :  The Official GrahamHancock.com forums
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The ancient Egyptians laid the foundations of many sciences and some of their discoveries influenced Greek and Roman science. In the field of acoustics we know from the Roman architect, Vetruvius, that acoustic techniques were employed in both the Roman and Greek cultures; but were their architects inspired by acoustical knowledge obtained from ancient Egypt?
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Cymatics Experiment in the Great Pyramid 375 WVK 12-Jan-18 23:03


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