大英博物館のインスタグラム(britishmuseum) - 4月16日 23時30分

This detailed brass instrument is the largest English astrolabe to have survived from the Middle Ages. Astrolabes – Greek for ‘star taker’ – are used to navigate, keep time and cast horoscopes. This one is over 46cm across and was made in around 1300. Instruments like this were some of the most sophisticated available to people in the Middle Ages, having initially been developed over 2,000 years ago in ancient Greece. Knowledge of the skies, now called astronomy, was an important aspect of Islamic culture from the earliest of times. Muslim astronomers, driven by the need to determine prayer times and the direction of Mecca, developed and refined scientific instruments like the astrolabe from the 7th century AD onwards. This beautifully decorated astrolabe was part of Sir Hans Sloane’s collection which became the foundation of the British Museum in the mid-18th century. Sloane was born #onthisday in 1660. #astrolabe #otd #HansSloane #BritishMuseum #Museum #London #collection #horoscopes

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