Читать книгу Astronomy in your pocket - Vladimir Vladimirovich Bereznyakovsky - Страница 9

The Arabs, having conquered the Arabian Peninsula, formed in the VIII – X century a powerful state – the Arab Caliphate. As early as the seventh century, the treasures of ancient science fell into the hands of the Arabs, but these manuscripts were fully translated and used only by the eighth and ninth centuries. Despite this, Arab scholars wrote many encyclopedic works and essays. In 1417—1420, the grandson of the famous Central Asian conqueror Tamerlane, Ulugbek built the most famous Observatory in the Middle and near East. Working at this Observatory, Arab scientists together with Ulugbek achieved significant results by determining and measuring the Equatorial and horizontal coordinates of the stars, the tilt of the Ecliptic to the equator, the position of the spring equinox, and stellar coordinates; a special table was created to calculate lunar eclipses.