Archive for the ‘Astronomy’ Category

Mathematical Astronomy in Medieval Kerala

Friday, November 8th, 2013

I spoke to Anand, an astronomer at the new ISRO institute in Trivandrum, when I was there in June. He also moonlights as a science journalist and wrote this article about our conversations on mathematics in medieval Kerala.

Medieval Navigation in the Arabian Sea

Thursday, August 9th, 2007

Read First: Longitude Zero

Indians call the bay between Africa and India the Arabian Sea. Throughout the medieval times it was controlled by Arab sailors. They established settlements down the East coast of Africa, as far down as Malindi in Kenya. (more…)

Longitude Zero

Thursday, August 9th, 2007

Continued in: Medieval Navigation in the Arabian Sea

One of the early achievements of Indian Mathematical Astronomy (jyotisha) was the system of latitude (aksha-amsa) and Longitude (rekha-amsa). The prime meridian passed through Ujjaini, the capital of the country of Avanti. (more…)