My new research focuses on mathematics and the sciences of the stars in 14th-century Constantinople, especially the network of polymaths around Nikephorus Gregoras.
In a fragment attributed to John Kamateros on the astrolabe are a handful of interesting diagrams illustrating the various parts of an astrolabe. Here is the diagram showing the rete. There is also diagram illustrating the plate, and two showing different aspects of the back of the instrument. Read more
In Vienna’s 13th district stands a beautiful Jugendstil building, the Galileihof. Designed by and built by Emil Reitmann in 1905, the building appears to have been renovated not long ago. Vienna is strangely committed to Galileo. In addition to the Galileihof, on the other side of town is the Galileigasse,… Read more
The label identifies this painting as a portrait of Pierre Joseph de Rivaz, an 18th-century “Swiss mathematician, inventor and historian.” Rivaz is not particularly famous, and seems to be better known for his inventions than his mathematical achievements. Nonetheless, the label claims this is a “Portrait of a Mathematician.” Although… Read more