INDIAN HISTORY

Detailed explanation-1: -In AD 1017, when Mahmud of Ghazni was the ruler, most scholars, including Alberuni, were taken to Ghazni, the capital of the Ghaznavid dynasty.

Detailed explanation-2: -Alberuni was a well-deserved scholar in the court of Mahmud of Ghaznavi. He came with India during his invasion of India.

Detailed explanation-3: -Al-Beruni came to India during the period of Sultan of Muhammad of Ghazni.

Detailed explanation-4: -He was a renowned philosopher, a mathematician and a historian. He came in contact with Mahmud when he had invaded Khiva and he was presented before him as prisoner. He came to India with Mahmud and lived here for many years. The Indian culture attracted him and he learnt Sanskrit.

Detailed explanation-5: -Important contributions to geodesy and geography were also made by al-Biruni. He introduced techniques to measure the earth and distances on it using triangulation. He found the radius of the earth to be 6339. 6 km, a value not obtained in the West until the 16th century (see [50]).