Jantar Mantar Jaipur | Largest Sundial in the World | 18th century Stone Astronomical Observatory

Jantar Mantar Jaipur is an 18th century astronomical observatory and a UNESCO World Heritage Site situated in the heart of Jaipur city. Jaipur ka Jantar Mantar has the Largest Sundial in the world. Jantar Mantar is a collection of 19 architectural astronomical instruments, built by the Rajput King Sawai Jai Singh II (Maharaja Jai Singh). Jantar Mantar is one of the must visit place in Jaipur and is an integral part of Jaipur Tourism. #JaipurKaJantarMantar #JaipurTourism #LargestSunDial Buy items from Indian Globetrotting Shop Amazon Influencer Page https://www.amazon.in/shop/indianglob... This video is a documentary on Jantar Mantar history and working of astronomical instruments like Laghu Samrat Yantra (Small Sun Dial), Vrihat Samrat Yantra (Largest Sun Dial), Jai Prakash Yanthra, Rashi Valaya Yanthra and Ram Yanthra. The name jantar is derived from yantra, a Sanskrit word meaning instrument and mantar from mantrana another Sanskrit word which means calculate. Jantar Mantar literally means 'calculating instrument The construction if the monument started in 1720 and was completed in 1734. 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. Jantar Mantar is a Stone Observatory. Metals Shrink and expands, but Stone wont and is not affected by any season Vrihat Smarat Yantra Vrihat Smarat Yantra is largest sundial in the world. The Vrihat Samrat Yantra, which means the "great king of instruments", is having a height of 88 feet (27 m). It is placed at the center of Jantar Mantar observatory. This instruments works similar to the Small Sundial, but has a precision of two seconds. The shadow of the triangular wall of the yantra, which is positioned in the north-south direction with an angle identical to the latitude of this location, travels equal distances in equal intervals of time, on the eastern and western quadrants. This movement is standardized to calculate and interpret the local time. Laghu Samrat Yantra The smaller sundial at the monument,This sundial can calculate time upto an accuracy of 20 seconds. The ramp of this sundial points towards the North Pole, and hence Jaipur time can be easily calculated from the position of ramp’s shadow on the fine divisions of the carved scale. The shadow of the triangular wall of the yantra plus the reference time tells the local time. Jai Prakash Yantra This Yanthra consist of two hemispherical bowl like sundial with marked marble slabs that map inverted image of sky.This gaps are added to allow the observer to move inside the instrument, This missing portion in this part is recreated next to this. In the middle you can see a iron ring which represents sun. The inverted image of the sky falls on the slabs and the movement of the inverted shadows help to detect the elevation, azimuth, hour angles and exact position of heavenly bodies. Rashi Valaya Yantra. Each of the 12 instruments is associated with one of the 12 signs of the zodiac.The purpose of the instrument is to calculate the sidereal time. Ram Yanthra Ram Yantra measures elevation and azimuth of Sun and planets. The instrument comprises a pair of tube-shaped structures, open to the sky. Each structure has a pole of equal height at the center. Scales indicating angles of altitude and azimuth of extra-terrestrial bodies are inscribed inside the walls of these structures. The circular ring near the roof of the instrument has 360 degree scale for the azimuth, along the circumference. Each degree division is further divided into minute divisions and the smallest division is one fifth of a degree. Ram Yantra is only seen in Jantar Mantar of Jaipur and New Delhi. 1. Chakra Yantra 2. Dakshin Bhitti Yantra (measures meridian, altitude and zenith distances of celestial bodies) 3. Digamsha Yantra (used to measure azimuth of the sun, and to calculate the time of sunrise and sunset forecasts) 4. Disha Yantra 5. Dhruva Darshak Pattika (observe and find the location of pole star with respect to other celestial bodies) 7. Kapali Yantra (measures coordinates of celestial bodies in azimuth and equatorial systems, any point in sky can be visually transformed from one coordinate system to another) 8. Kanali Yantra 9. Kranti Vritta Yantra (measures longitude and latitude of celestial bodies) 11. Misra Yantra (meaning mixed instrument, it is a compilation of five different instruments) 12. Nadi Valaya Yantra (two sundials on different faces of the instrument, the two faces represent north and south hemispheres, the accuracy of the instrument in measuring the time is less than a minute) 13. Palbha Yantra 16. Shastansh Yantra (to measure the zenith distance, declination, and the diameter of the Sun.) 17. Unnatamsa Yantra 19. Yantra Raj Yantra (a 2.43-metre bronze astrolabe, one of the largest in the world, used only once a year, calculates the Hindu calendar)