Anamorphosis before 1583. "The Ambassadors" (c. 1533) by Hans Holbein the Younger is well known for the prominent oblique anamorphic transformation in the painting. In this artwork, a distorted shape lies diagonally across the bottom of the frame. Viewing this from an acute angle transforms it into the plastic image of a human skull. The painting is regarded as a "vanitas" - a meditation on the transience of life - with the skull a symbolic "memento mori". The altered perspective required to see the image reflects the contemporary practice of painting skulls on the reverse of otherwise tranquil paintings. Four centuries
After the Deluge (painting) the unworthy from the world. The painting takes the form of a stylised seascape, dominated by a bright sunburst breaking through clouds. Although this was a theme Watts had depicted previously in "The Genius of Greek Poetry" in 1878, "After the Deluge" took a radically different approach. With this painting he intended to evoke a monotheistic God in the act of creation, but avoid depicting the Creator directly. The unfinished painting was exhibited in Whitechapel in 1886, under the intentionally simplified title of The Sun. Watts worked on the painting for a further five years, and the completed version was