Julius Grimm's 1888 painting of the moon:
The painting shows the moon as it can never be seen in reality: fully lit across the entire surface at once. The painting’s highly textured surface faithfully represents the actual landscape of the moon, which Grimm determined with precision by examining the shadows cast during the various lunar phases. When lighted from the direction Grimm indicated with a painted arrow, the ridges of paint cast shadows that create the photorealistic effect of the painting.
Via but does it float.
