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polistra's avatar

Islam went beyond simply establishing the direction. Starting around 1200 AD, astronomers built and sold qibla tools, remarkably elegant mapping devices. A pocket-sized GPS for finding Mecca.

http://polistrasmill.blogspot.com/2021/06/astrometeorology-5-qibla.html

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Devayani Khare's avatar

Beautifully written, I'd never considered the difference between geodesic and straight line distances. Will pay more attention when I fly overseas next.

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Miguel García Álvarez's avatar

Thank you!

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