triquetrum
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triquetrum |
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| navigate by keyword : accuracy ancient angular antique astrology astrometry astronomical astronomy background circle constellation equipment exploration famous height history instrument isolated machine measurement medieval museum observatory old outerspace position retro rule scale science sign star style sun system technology time triangle triquetrum universe white wooden |
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| Triquetrum - instrument for astrometry used by Nicolaus Copernicus to determine positions of stars and other objects in sky which gave rise to his heliocentric theory |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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