Saint Hubert Altarpiece Saint Hubert Altarpiece The Saint Hubert Altarpiece was a late 1430s altarpiece in the Chapel of St Hubert in the church of St Gudule, Brussels by Rogier van der Weyden and his studio. Its central image is lost but its side panels are thought to be "The Dream of Pope Sergius" (J. Paul Getty Museum) and "The Exhumation of St Hubert" (National Gallery, London) - In around 1623 Dubuisson-Aubenay recorded seeing a two-part painting in that church which matches the description of these two panels. The main scene shows an angel appearing to Pope Sergius I in his sleep, informing
Hinged dissection Hinged dissection A hinged dissection, also known as a swing-hinged dissection or Dudeney dissection, is a kind of geometric dissection in which all of the pieces are connected into a chain by "hinged" points, such that the rearrangement from one figure to another can be carried out by swinging the chain continuously, without severing any of the connections. Typically, it is assumed that the pieces are allowed to overlap in the folding and unfolding process; this is sometimes called the "wobbly-hinged" model of hinged dissection. The concept of hinged dissections was popularised by the author of mathematical puzzles, Henry Dudeney.