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I have just returned from the XII Trobada (twelfth congress) of the Societat Catalana d’Història de la Ciència i de la Tècnica (SCHCT –...

[Drumroll] Ladies and gentlemen, I shall now demonstrate the use of a medieval planetary equatorium! In the first two posts in this...

In my first post I described how I began making an equatorium according to the instructions in the fourteenth-century manuscript I’m...

Great day out in Nottingham yesterday.  It's always fun to be a shameless tourist but the highlight was not one of the usual sights...

Just published a new article on the Whipple Museum‘s “Explore Collections” site.  Here it is: https://www.whipplemuseum.cam.ac.uk/explore...

I’ve just started a research project focusing on a medieval manuscript, The Equatorie of the Planetis.  This manuscript describes the...

With a free weekend, and fine autumn weather forecast, it seemed a good time to try making my own planetary equatorium. I’m studying a...