Figure 1
Camille Pissarro, Snowscape in Louveciennes, 1872. © Museum Folkwang, Essen.
Figure 2
Hallway illuminated in two different ways. Photo by the author.
Figure 3
Alfred Sisley, A Village Street in Winter, 1893. Public domain.
Figure 4
James Abbott McNeill Whistler, Nocturne: Blue and Silver, 1871. Tate Britain, London. Public domain.