June 8, 2020: Provisional Investigation of Geometric Proportions in 15th-century Cologne Panel Painting by rbork Provisional Investigation of Geometric Proportions in 15th-century Cologne Panel Painting Author: Robert Bork Provisional Investigation of Geometric Proportions (PDF) Post navigation Previous ← Art, Science, and Evolution Next Ground Plan Geometries in Suger’s St-Denis: A Prototype for Altenberg →