The gnomon is a right-angled triangle. The slanting side is at an angle of 28.4° to the ground, meant to match what was thought to be Delhi’s latitude in those days (it is taken as 28.7° today ...

A visit to Jaipur is incomplete without a visit to the historic Jantar Mantar. It is one of the five observatories built by Sawai Jai Singh in 1718. It houses a huge collection of astronomical ins ...

At first sight, the Jantar Mantar appears like a gallery of modern art. It is, however, an observatory. Sawai Jia Singh II of Jaipur (1699-1743), a keen astronomer and a noble in the Mughal court ...