Fig. 11From: Assessing the decorative techniques of two Art Nouveau glass windows by optical coherence tomography (OCT)a Detail of the enamel decoration in the Atelier window (Spot 11). OCT tomograms: b Tomogram 84, showing a continuous layer of well-preserved purple enamel; c Tomogram 51, showing a continuous layer of well-preserved pink enamel. Solid line: well-preserved grisaille/enamel. The tomograms are shown on the same scaleBack to article page