The history of jantar mantar

 history of jantar mantar Delhi 


Jantar Mantar is an observatory located in the heart of New Delhi, India. It was built in the early 18th century by Maharaja Jai Singh II, a Rajput king and astronomer. The word "Jantar Mantar" is derived from Sanskrit, meaning "instruments for measuring the harmony of the heavens".



Jai Singh II was a keen astronomer and mathematician who was fascinated by the heavens. He constructed five observatories in different parts of India, including Jaipur, Delhi, Ujjain, Varanasi, and Mathura. The Jantar Mantar in Delhi was built in 1724 and is the largest of all the observatories constructed by Jai Singh II.


The Jantar Mantar in Delhi consists of 13 astronomical instruments, each with a specific purpose. These instruments were designed to measure time, predict eclipses, and track the positions of stars and planets. They are all made of stone and marble and are carefully placed to align with the cardinal directions.


The most famous instrument at Jantar Mantar is the Samrat Yantra, which is the world's largest sundial. It measures time with remarkable accuracy and can tell the time of day to within two seconds. The Samrat Yantra is a massive triangle that stands 27 meters tall and is made of solid stone.


Another popular instrument at Jantar Mantar is the Jai Prakash Yantra, which is used to measure the position of the sun, moon, and stars. It consists of two concave hemispheres that are used to project an image of the sky onto a flat surface. This allows astronomers to measure the position of celestial bodies accurately.


Jantar Mantar was an important center of astronomical research in India for several centuries. It was used by Jai Singh II and his successors to make astronomical observations and to calculate the Hindu calendar. It was also used by British astronomers in the 19th century to study the stars and planets.


Today, Jantar Mantar is a popular tourist attraction and a symbol of India's scientific and cultural heritage. It has been designated as a National Monument by the Indian government and is protected by the Archaeological Survey of India. The observatory is open to the public, and visitors can explore the various instruments and learn about the history of astronomy in India.


In conclusion, the Jantar Mantar in Delhi is an impressive feat of astronomical engineering that has stood the test of time. It is a testament to the scientific and cultural achievements of India and a must-visit destination for anyone interested in astronomy or history.


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