A 2,000-Year History of Alarm Clocks - Atlas Obscura
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Yi Xing was a bit of an overachiever. A mathematician, engineer, Buddhist monk and astronomer, Xing was asked to improve calendars in China. He took it one
Alarm clock - Wikipedia
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A 2,000-Year History of Alarm Clocks - Atlas Obscura
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Turn Back the Clock - Museum of Science and Industry
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Automated teller machine - Wikipedia
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Medieval Clock – Salisbury, England - Atlas Obscura
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Turn Back the Clock - Museum of Science and Industry
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Atlas Obscura - Wikipedia
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Atlas Obscura's Guide to the Longest Running Scientific Experiments - Atlas Obscura
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Spring Forward With These Clever Clocks - Atlas Obscura
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A 2,000-Year History of Alarm Clocks - Atlas Obscura