Jantar Mantar, Jaipur, Rajasthan, India
Brihat Samrat Yantra, the world's largest gnomon sundial, measuring time in intervals of 2 seconds using shadow cast from the sunlight, at Jantar Mantar, a monument completed in 1734 built by Maharaja Sawai Jai Singh, founder of Jaipur, featuring 19 architectural astronomical instruments, in Jaipur, Rajasthan, India. The instruments allow the observation of astronomical positions with the naked eye. They measure time, predict eclipses, track the location of major stars and ascertain the declinations of planets. Jantar Mantar is listed as a UNESCO World Heritage Site. Picture by Manuel Cohen
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1734 Astronomical Celestial Gnomon Jaipur Jantar Maharaja Mandir Mantar Measurement Measuring Positional Ptolemaic Rajasthan Rajasthani Samrat Sawai Singh Sundial Yantra
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