Описание слов на английском языке: ------------------ Изобретения: коротко об изобретении кем сделаны, когда Astrolabe An astrolabe is a historical astronomical instrument used by astronomers, navigators, and astrologers. Its many uses include locating and predicting the positions of the Sun, Moon, planets, and stars; determining local time and vice-versa; surveying; triangulation; and to cast horoscopes. They were used in Classical Antiquity and through the Islamic Golden Age and the European Middle Agesand Renaissance for all these purposes. In the Islamic world, they were also used to calculate the Qibla and to find the times for Salah, prayers. Drum The drum is a member of the percussion group of musical instruments, technically classified as the membranous. Drums consist of at least one membrane, called a drumhead or drum skin, that is stretched over a shell and struck, either directly with the player\'s hands, or with a drumstick, to produce sound. There is usually a "resonance head" on the underside of the drum. Drums are the world\'s oldest and most ubiquitous musical instruments, and the basic design has remained virtually unchanged for thousands of years.