A rainbow disappears when you get close enough. It is there, yet is not. There are things graspable only from a distance.
A text written about rainbows is broken down into fragments and printed onto two glass plates, complementing each other. The letters printed on the glass behind are slightly bigger to counter the law of perspective, so that from a certain distance the whole text looks completely united. However, in this united state, the letters are too small to read, and when you approach trying to read it, the text falls apart, just like a rainbow losing its colors.