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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Lunar eclipses and other things
From: Alexandre Eremenko
Date: 2004 Oct 26, 20:33 -0500
From: Alexandre Eremenko
Date: 2004 Oct 26, 20:33 -0500
Fear Lisa, I am glad you liked my little historical digression. On Wed, 27 Oct 2004, Lisa Fiene wrote: > Consider Hypatia of Alexandria (?350/379AD to 415AD) She was also one of the last Alexandria's mathematicians... She was lynched by the mob. Other remanining mathematicians were facing a choice: to quit their activities or to go to exile (6 of them went to exile, to Persia). The full scale Dark Age was beginning... > Most references agree that the actual origin (and inventor) of the > astrolabe is shrouded in mystery. Ptolemy certainly discusses the > principles of stereographic projection 200 years earlier. I actually know very little about astrolabia. And its connection to streographic projection is new to me. Any references on this connection? Alex.
