The year 1727 in science and technology involved some significant events.
Paṇḍita Jagannātha Samrāṭ (1652–1744) was an Indian astronomer and mathematician who served in the court of Jai Singh II of Amber, and was also his guru.
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 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).
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.
Ujjain is an ancient city of central India, in the Malwa region of the Indian state of Madhya Pradesh, on the eastern bank of the Kshipra River.
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.
The Maragheh observatory, also spelled Maragha, Maragah, Marageh, and Maraga, was an astronomical observatory established in the mid 13th century under the patronage of the Ilkhanid Hulagu and the directorship of Nasir al-Din al-Tusi, a Persian scientist and astronomer. The observatory is located on the west side of Maragheh, which is situated in today's East Azerbaijan Province of Iran. It was considered one of the most advanced scientific institutions in Eurasia because it was a center for many groundbreaking calculations in mathematics and astronomy. It housed a large collection of astronomical instruments and books and it served as an educational institution. It was also used as a model for the later Ulugh Beg Observatory in Samarkand, the Taqi al-Din observatory in Constantinople, and Jai Singh observatory in Jaipur.
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.
India uses only one time zone across the whole nation and all its territories, called Indian Standard Time (IST), which equates to UTC+05:30, i.e. five and a half hours ahead of Coordinated Universal Time (UTC). India does not currently observe daylight saving time.
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 City Palace, Jaipur is a royal residence and former administrative headquarters of the rulers of the Jaipur State in Jaipur, Rajasthan. Construction started soon after the establishment of the city of Jaipur under the reign of Maharaja Sawai Jai Singh II, who moved his court to Jaipur from Amber, in 1727. Jaipur remained the capital of the kingdom until 1949—when it became the capital of the present-day Indian state of Rajasthan—with the City Palace functioning as the ceremonial and administrative seat of the Maharaja of Jaipur. The construction of the Palace was completed in 1732 and it was also the location of religious and cultural events, as well as a patron of arts, commerce, and industry. It was constructed according to the rules of vastushastra, combining elements of Mughal and Rajput architectural styles. It now houses the Maharaja Sawai Man Singh II Museum, and continues to be the home of the Jaipur royal family. The royal family has around 500 personal servants. The palace complex has several buildings, various courtyards, galleries, restaurants, and offices of the Museum Trust.The MSMS II Museum Trust is headed by chairperson Rajamata Padmini Devi of Jaipur. Princess Diya Kumari runs the Museum Trust, as its secretary and trustee. She also manages The Palace School and Maharaja Sawai Bhawani Singh School in Jaipur. She founded and runs the Princess Diya Kumari Foundation to empower underprivileged and underemployed women of Rajasthan. She is also an entrepreneur. In 2013, she was elected as Member of the Legislative Assembly of Rajasthan from the constituency of Sawai Madhopur.
The Sapta Puri are a group of seven Hindu tirtha, or holy pilgrimage sites, located in India. Pilgrimage to these sites is said to bless the pilgrim with moksha.
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 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 is an Indian equinoctial sundial, consisting a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis.
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.
