जंतर मंतर जयपुर || Jantar Mantar Jaipur || Vlogs Rahul 

जंतर मंतर जयपुर || Jantar Mantar Jaipur || Vlogs Rahul
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जंतर मंतर जयपुर || Jantar Mantar Jaipur || Vlogs Rahul
Albert Hall Museum Jaipur
Jaigarh Fort Jaipur
Nahargarh Fort Jaipur
Jal Mahal Jaipur
Jantar Mantar Jaipur
City Palace Jaipur
Hawa Mahal Jaipur
Amber Palace Jaipur
Jaipur City
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 It features the world's largest stone sundial and is a UNESCO World Heritage site It is located near City Palace and Hawa Mahal The instruments allow the observation of astronomical positions with the naked eye The observatory is an example of the Ptolemaic positional astronomy which was shared by many civilizations
Exactly when Jai Singh began construction in Jaipur is unknown but several instruments had been built by 1728 and the construction of the instruments in Jaipur continued until 1738 During 1735 when construction was at its peak at least 23 astronomers were employed in Jaipur and due to the changing political climate Jaipur replaced Delhi as Jai Singh main observatory and remained Jai Singh central observatory until his death in 1743 The observatory lost support under Isvari Singh r 1743-1750 because of a succession war between him and his brother However Mado Singh r 1750-1768 Isvari Singh successor supported the observatory although it did not see the same level of activity as under Jai Singh Although some restorations were made to the Jantar Mantar under Pratap Singh r 1778-1803 activity at the observatory died down again During this time a temple was constructed and Pratap Singh turned the site of the observatory into a gun factory
Ram Singh r 1835-1880 completed restoring the Jantar Mantar in 1876 and even made some of the instruments more durable by inserting lead into the instruments lines and using stone to restore some of the plaster instruments However the observatory soon became neglected again and was not restored until 1901 under Madho Singh II r 1880-1922
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