Water, water everywhere

The roof above my room at school has a pesky leak. It has been worked on multiple times, but it continues to drip on our heads. As a result, there is much water to deal with which can be annoying at times, but it also leaves some interesting results. This is the underside of a chair. The paper acted as a dye separation as the water crept up with capillary action. I thought the resulting image was eye-catching.