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Did you know? Interesting statistics
Posted 17 years ago by boyt in category: interesting   Comments (1)

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High voltage repair man
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How to detect a lie
Posted 16 years ago by boyt in category: interesting   Comments (0)

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Time lapse of molds and mushrooms growing
Posted 16 years ago by boyt in category: interesting   Comments (1)

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How did you tell the time in the 13-th century?
Tom Wujec demos the 13th-century astrolabe
Posted 14 years ago by baffon in category: interesting   Comments (1)