# 11 // 0,000000000000000012 microgram of light (2001)
Use two rooms with an opening between them, put a light projector in one of the rooms, darken the other with curtains. Turn on the light projector and direct it through the opening into the dark room. Make the light fall into the dark room in the same way it would if you left the door open for a child who was afraid of the dark.