Archaeologists have always insisted that ancient lenses never existed. Temple's detective work began when he discovered an artefact in the British Museum, believed to be plain rock crystal. He discovered it had been ground to form a lens and proved the true age of optical surveying techniques.
The Crystal Sun Summary
The Crystal Sun: The Most Secret Science of the Ancient World by Robert K.G. Temple
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GOR010085419
9780712678889
0712678883
The Crystal Sun: The Most Secret Science of the Ancient World by Robert K.G. Temple
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