By far the most common and versatile astronomical instrument of your time period was the astrolabe, a two-dimensional representation from the night time sky. The origins from the instrument are now lost, but an anecdote through the medieval period playfully implies that, though Driving on the donkey one day, Ptolemy https://jeffreyowycd.activablog.com/28439429/what-does-latest-gadgets-in-market-mean