Yael Kedar and I have organized a reading group on #RogerBacon 's Communia mathematica. Next Friday, Aurélien Robert will guide us through the first distinctio of the text. Fear not the #Latin! Fear not the #mathematics! It's about time to take this bull (Bacon's Communia mathematica) by the horns!

Looking forward to the upcoming Lodz conference on medieval theories of sense perception! I'll present a joint paper with Aurora Panzica on 'Fifteenth-century Discussions on Light and Its Role in Visual Perception in the Cracow Commentaries on De anima and Perspectiva communis'.

Something special at Leeds: the surprise discovery of a Wyclif manuscript at Merton College, where he was a grad student in the 1350s! Gigi Campi can’t make it, so the other talks will be less compressed. Jordan Lavender’s will be about his discovery; mine will be more general. #IMC2025 #medievalSky

📌 Shoutout to the CfP "Between Natural Philosophy and Natural History" on Folia Philosophica (Polish peer-reviewed journal of the University of Silesia), with guest editors Jan Čížek & Marek Otisk. journals.us.edu.pl/index.php/FO...

A really great set of talks yesterday by @eleonoraandriani.bsky.social & others commemorating the life of José Chabás and the ALFA project on medieval astronomical tables. For anyone who missed it, a short thread below on resources & scholarship from this project. #medievalsky #histsci #histastro 🧵

News about scholarly articles related to medieval philosophy and science. One new issue of a journal every Monday – as you know from Twitter.

Conference ‘Debates, uncertainties, multiple truths: Scholarly disagreement in early modern European education’ (Warsaw, December 7-9, 2023) knowstudents.org/programme-of...

I'm thrilled to learn that my project on the manuscript dissemination of late medieval optics and the role of John Peckham's Perspectiva communis has received funding from the Czech Science Foundation (GAČR). Stay tuned for more updates! gacr.cz/en/czech-sci... #histsci

My recent paper "An Eastward Diffusion: The New Oxford and Paris Physics of Light in Prague Disputations, 1377-1409" on the new quantitative techniques of the 14th-century physics applied to the issue of propagation of light. www.academia.edu/101795381/An... poj.peeters-leuven.be/content.php?...

Colour scales in Aristotle and Avicenna. [Schwarz – Kuehni, Color Ordered. A Survey of Color Order Systems from Antiquity to the Present (Oxford 2008)]

As many others, looking for an alternative to Twitter/X...