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king Sawai Jai Singh II
Built by the Rajput king Sawai Jai Singh II in 1734, Jantar Mantar, Jaipur is an astronomical observatory, which features the world’s largest stone sundial. India has five of them, and the largest one is in Jaipur.
The Jaipur observatory in Rajasthan, which contains the Jantar Mantar instruments, is the largest and best preserved of the ancient Big Observatories. The Samrat Yantra (translation: Supreme Instrument) is the World’s Largest Sundial.
Jai Singh II
Subsequently between 1724 and 1737, Jai Singh II had five observatories constructed in Jaipur, Mathura, New Delhi, Ujjain and in Varanasi….Jantar Mantar, Ujjain.
|Founder||Maharaja Jai Singh II|
|Original use||Determine Eclipses|
The mathematician and astronomer Theodosius of Bithynia ( c. 160 BC to c. 100 BC) is said to have invented a universal sundial that could be used anywhere on Earth.
The mathematician and astronomer Theodosius of Bithynia ( c. 160 BCE to c. 100 BCE) is said to have invented a universal sundial that could be used anywhere on Earth. The Romans adopted the Greek sundials, and the first record of a sundial in Rome is 293 BCE according to Pliny.
The Giant Sundial of Jantar Mantar in Jaipur, India, stands 27m tall. Its shadow moves visibly at 1 mm per second. Its shadow moves visibly at 1 mm per second. 26°55′29″N 75°49′29″E / 26.9247°N 75.8248°E / 26.9247; 75.8248 ( The Giant Sundial of Jantar
Let’s take a look at the accuracy of the Sundial at Konark Sun temple in India built in 1250 A.D. People still use it today to tell time. Let me show you a short clip of a tour guide figuring out the time and then I will explain how this sundial works. As you can see, the sundial is pretty accurate and people are amazed by it.
This Big Sundial is 27 meters (90 feet) tall, and is so large that its shadow moves at a speed of 1 millimeter per second. If you stand and watch it, you’ll see it move 6 centimeters (about 2 1/3 inches) every minute.