CREDIT: Naomi Kendall inspired me for a remake of the rubins vase, this my version, what is yours?
Optical illusion. Do you see a vase, or two heads in the negative space?
Edgar Rubin was a Danish psychologist who is famous for developing the "Rubin's Vase" around 1915. It is sometimes known as the "Rubin Face" or the "figure-ground vase".