This is a wonderful moment of preparation of the upcoming EIDA workshop. I am most grateful for this support, and look very much forward to see the instruments in action! (Even if, as a consequence, we figure out that we got it all wrong with our reconstruction of this arcane instrument…)

It is a Saturday and what better activity than building planicelia together with @sgessner.bsky.social and Florence Somer in preparation for Celestial Scripts on Monday!

🎉 Today's the first day of our "Euclid's Elements and Practical Mathematics" workshop in Wuppertal 📖 I'll try to present the speakers, beginning with Philip Beeley ⤵️

Already looking forward to the 2026 edition!

It’s a snapshot of the in-person participants after the final session. Full programme: eida.hypotheses.org/conference-2...

Even more so, to help shape this shared journey: creating spaces for conversations between people and between diagrams from historical manuscripts and prints—in Chinese, Arabic, Persian, Hebrew, Greek, Latin, and various vernacular traditions.

Just wrapped up the 2025 EIDA conference—once again, an incredibly productive and inspiring gathering. Held in the historic building of the Observatoire de Paris, it was a true pleasure to listen to and exchange ideas with so many sharp and generous scholars—both in person and online.

From June 2 to June 6, 2025, the Training Week: A Global History of Astronomy on Primary Sources: New Approaches, New Digital Tools will take place in Paris. Limited number of scholarships; deadline April 18, 2025. For more details: eida.hypotheses.org/seminars-2/t...

Si vous aimez plonger dans le monde merveilleux des astrolabes, cadrans solaires et livres d’astronomie anciens, suivez ce fil de toute urgence. 👇 Thanks @stephenaj.bsky.social for sharing these treasures! #histsci #historyofastronomy 🔭