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Long Overlooked, This 11th-Century Astronomical Device Documents Scientific Exchange Among Muslims, Jews and ChristiansThe item in question was a 1,000-year-old astrolabe, a tool designed by the ancients for celestial navigation, telling time and reading horoscopes. And its engravings told an unexpected tale.
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The astrolabe is an ancient astronomical tool of ... and whipped up a simple scroll saw powered by an old sewing machine foot treadle to speed up his work. The real treat though is the hand ...
The identification of an eleventh-century Islamic astrolabe bearing both Arabic and Hebrew inscriptions makes it one of the oldest examples ever discovered and one of only a handful known in the ...
So what follows is very summary indeed. At first sight this astrolabe looks like an outsized old-fashioned pocket watch with an entirely brass face. It sits easily in my hand - in fact it fills it ...
So what follows is very summary indeed. At first sight this astrolabe looks like an outsized old-fashioned pocket watch with an entirely brass face. It sits easily in my hand - in fact it fills it ...
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