Fig. 1
From: Fracture saturation in paintings makes them less vulnerable to environmental variations in museums

Hans Memling, The Last Judgment, a detail. Distemper, oil on wood, painted c. 1467–1471, owned by the National Museum in Gdańsk, Poland. Predominantly parallel cracks were induced in the past by swelling of the wood substrate. The image is used with permision of the National Museum in Gdańsk. Photo: Piotr Frączek and Michał Obarzanowski