This is a summary of the 11th century in science and technology. Al-Biruni is regarded as one of the greatest scholars of 11th century and was well versed in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist and linguist. 95 of 146 books known to have been written by Bīrūnī, were devoted to astronomy, mathematics, and related subjects like mathematical geography.