He first cast anchor at Botany Bay, visited the Friendly Isles, New Caledonia, then directed his course towards Santa Cruz, and put into Namouka, one of the Hapai group. View in context At the same time, Al-Khwarizmi was busy in search of knowledge of mathematics; Ibn-Sina in medical ...
:an instrument for observing the positions of heavenly bodies that was used before the sextant was invented More from Merriam-Webster onastrolabe Britannica.com:Encyclopedia article aboutastrolabe Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more de...
Did Hypatia invent the hydrometer? Hypatiaalso developed the so called hydrometer (hydroscope). It was an instrument used for determining the specific gravity of liquids. Hypatia | The First Woman Mathematician
Introducing the Astrolabe One of those instruments was the astrolabe. Its name literally means "star taker". It was in use well into the Middle Ages and Renaissance and is still in limited use today. Most people think of astrolabes as being used by navigators and scientists of old. The tec...