Jantar Mantar (Yantra Mantra) is an Indian equinoctial sundial, consisting a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis.
Jantar Mantar may also refer to:
Sawai Jai Singh II, was the 29th Kachwaha Rajput ruler of the Kingdom of Amber, who later founded the fortified city of Jaipur and made it his capital. He became the ruler of Amber at the age of 11, after the death of his father, Mirza Raja Bishan Singh, on 31 December 1699.
The Jantar Mantar, Jaipur is a collection of 19 astronomical instruments built by the Rajput king Sawai Jai Singh, 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 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.
Jantar Mantar is located in the modern city of New Delhi. "Jantar Mantar" means "instruments for measuring the harmony of the heavens". It consists of 13 architectural astronomy instruments. The site is one of five built by Maharaja Jai Singh II of Jaipur, from 1723 onwards, revising the calendar and astronomical tables. Jai Singh, born in 1688 into a royal Rajput family that ruled the regional kingdom, was born into an era of education that maintained a keen interest in astronomy. There is a plaque fixed on one of the structures in the Jantar Mantar observatory in New Delhi that was placed there in 1910 mistakenly dating the construction of the complex to the year 1710. Later research, though, suggests 1724 as the actual year of construction. Its height is 723 feet (220 m).
Anil Kumar Das FRAS, FNI was an Indian scientist, astronomer. During the International Geophysical Year, observatories in Madrid, India, and Manila were responsible for monitoring solar effects. The Kodaikanal Solar Observatory in South India performed this monitoring using their recently built solar tunnel telescope. Das was the director of the Kodaikanal observatory at this time. In 1960 he was responsible for installing a tower/tunnel telescope at the facility that would be used to perform some of the first helioseismology investigations. The crater Das on the far side of the Moon is named after him.
Indian astronomy refers to astronomy practiced in the Indian subcontinent. It has a long history stretching from pre-historic to modern times. Some of the earliest roots of Indian astronomy can be dated to the period of Indus Valley civilisation or earlier. Astronomy later developed as a discipline of Vedanga, or one of the "auxiliary disciplines" associated with the study of the Vedas dating 1500 BCE or older. The oldest known text is the Vedanga Jyotisha, dated to 1400–1200 BCE.
A Jantar Mantar is an assembly of stone-built astronomical instruments, designed to be used with the naked eye. There were five Jantar Mantars in India. All were built at the command of the Rajah Jai Singh II, who had a keen interest in mathematics, architecture and astronomy. The largest example is the equinoctial sundial belonging to Jaipur's assembly of instruments, consisting of a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis. On either side of the gnomon is a quadrant of a circle, parallel to the plane of the equator. The instrument can be used with an accuracy of about 20 seconds by a skilled observer to determine the time of day, and the declination of the Sun and the other heavenly bodies. It is the world's largest stone sundial, and is known as the Samrat Yantra. The Jaipur Jantar Mantar is a UNESCO World Heritage Site.
Nahargarh Fort stands on the edge of the Aravalli Hills, overlooking the city of Jaipur in the Indian state of Rajasthan. Along with Amer Fort and Jaigarh Fort, Nahargarh once formed a strong defence ring for the city. The fort was originally named Sudershangarh, but it became known as Nahargarh, which means 'abode of tigers'. The popular belief is that Nahar here stands for Nahar Singh Bhomia, whose spirit haunted the place and obstructed construction of the fort. Nahar's spirit was pacified by building a temple in his memory within the fort, which thus became known by his name.
Manali Kallat Vainu Bappu was an Indian astronomer and president of the International Astronomical Union. Bappu helped to establish several astronomical institutions in India, including the Vainu Bappu Observatory which is named after him, and he also contributed to the establishment of the modern Indian Institute of Astrophysics. In 1957, he discovered the Wilson–Bappu effect jointly with American astronomer Olin Chaddock Wilson.
Jantar may refer to:
Gyarah Sidi are the remains of the astronomical observatory of the Mughal Emperor Humayun. The ruins are situated at a stone's throw from Babur’s Mehtab Bagh, in a field on the banks of the Yamuna river in Agra.
The Park Hotels is a chain of contemporary luxury five-star boutique hotels in India belonging to the Apeejay Surrendra Group, headquartered in Kolkata. It comprises 30 hotels, including owned and leased, in 20 cities across four brands—The Park, The Park Collection, Zone by the Park and Zone Connect by the Park.
A sundial is a device that indicates time by using a light spot or shadow cast by the position of the Sun on a reference scale. As the Earth turns on its polar axis, the sun appears to cross the sky from east to west, rising at sun-rise from beneath the horizon to a zenith at mid-day and falling again behind the horizon at sunset. Both the azimuth (direction) and the altitude (height) can be used to create time measuring devices. Sundials have been invented independently in every major culture and became more accurate and sophisticated as the culture developed.
Mishra Yantra is an instrument in Jantar Mantar constructed between 1724 and 1730. A total of five Jantar mantars were constructed across North India in Jaipur, Delhi, Ujjain, Varanasi, and Mathura. They are one of the four astronomical instruments of the Jantar Mantar observatory located in New Delhi, India. Each instrument at Jantar Mantar are architecturally constructed based on mathematical observations, and help calculate celestial objects and time. The Mishra Yantra , is a compilation of five different instruments).
Jantar Mantar is a 1964 Hindi film directed by Radhakant. It starred Mahipal, Vijaya Choudhury and Ulhas. The music for the film was composed by Sardar Malik.
Delhi Queer Pride Parade is organised by members of the Delhi Queer Pride Committee every last Sunday of November since 2008. The queer pride parade is a yearly festival to honour and celebrate lesbian, gay, bisexual and transgender people, and their supporters. The parade usually runs from Barakhamba Road to Tolstoy Marg to Jantar Mantar.
Jantar Mantar is an observatory built in Varanasi in the year 1737 by Maharaja Jai Singh II of kingdom of Amber. The observatory is one of the five built by Maharaja Jai Singh II.
Jantar Mantar or Vedh Shala is located in the holy city of New Ujjain. It is an observatory built by Maharaja Jai Singh II in 1725 which consists of 13 architectural astronomy instruments. The observatory is one of the five observatories built by Maharaja Jai Singh II when he was governor of Ujjain.
Mantar may refer to:
Nandivada Rathnasree or N. Rathnasree was an Indian astrophysicist, science communicator, and science historian, who was the director of India's Nehru Planetarium for over twenty years. She was responsible for improvements to the planetarium, as well as for researching the use of historical architectural astronomical instruments in India. She is known for her work in science communication.