Jantar Mantar World Heritage Site

Observatory in Jaipur, Rajasthan,India

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The Jantar Mantar, Jaipur
UNESCO World Heritage Site
Jantar Mantar at Jaipur.jpg
LocationJaipur, Rajasthan, India
CriteriaCultural: (iii), (iv)
Reference1338
Inscription2010 (34th session)
Area1.8652 ha (4.609 acres)
Buffer zone14.6664 ha (36.241 acres)
Coordinates26°55′29″N 75°49′28″E / 26.92472°N 75.82444°E / 26.92472; 75.82444Coordinates: 26°55′29″N 75°49′28″E / 26.92472°N 75.82444°E / 26.92472; 75.82444
Jantar Mantar, Jaipur is located in Rajasthan
Jantar Mantar, Jaipur
Location of Jantar Mantar, Jaipur in Rajasthan
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Jantar Mantar, Jaipur is located in India
Jantar Mantar, Jaipur
Jantar Mantar, Jaipur (India)
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Jantar Mantar, Jaipur India.jpg

The Jantar Mantar is a collection of nineteen architectural astronomical instruments built by the Rajput king Sawai jai singh II, the founder of Jaipur, Rajasthan. The monument was completed in 1734.[1][2] It features the world's largest stone sundial, and is a UNESCO World Heritage site.[1][3] It is located near City Palace and Hawa Mahal.[4] The instruments allow the observation of astronomical positions with the naked eye.[1] The observatory is an example of the Ptolemaic positional astronomy which was shared by many civilizations.[1][2]

The monument features instruments operating in each of the three main classical celestial coordinate systems: the horizon-zenith local system, the equatorial system, and the ecliptic system.[2] The kanmala Yantraprakara is one that works in two systems and allows transformation of the coordinates directly from one system to the other.[5]

The monument was damaged in the 19th century. Early restoration work was undertaken under the supervision of Major Arthur Garrett, a keen amateur astronomer, during his appointment as Assistant State Engineer for the Jaipur District.[6]

  1. ^ a b c d "The Jantar Mantar, Jaipur - UNESCO World Heritage Centre". Whc.unesco.org. 31 July 2010. Retrieved 11 November 2012.
  2. ^ a b c The Jantar Mantar at Jaipur, India Portal to the Heritage of Astronomy, in partnership with UNESCO World Heritage Site
  3. ^ Smithsonian. Timelines of Science. Penguin. p. 136. ISBN 978-1465414342.
  4. ^ Yukio Ohashi (Editor: H Selin) (1997). Encyclopaedia of the History of Science, Technology, and Medicine. Springer. pp. 83–86. ISBN 978-0792340669.
  5. ^ Sharma, VN (1991). "The Kapala Yantras of Sawai Jai Singh" (PDF). Indian Journal of History of Science. 26 (2): 209–216. Archived from the original (PDF) on 5 May 2015.
  6. ^ Monthly Notices of the Royal Astronomical Society, Vol. 81, p. 257

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  • Jaipur

    Metropolis in Rajasthan, India

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  • Jaipur district

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