Solargraphy is a very primitive and simple technique to take extremely long exposure photos of the Sun's movement. To make this possible you need a pinhole camera made from a lightproof can or box, a sheet of light sensitive photo paper and a tiny hole instead of a lens. Then the camera is placed somewhere in the city away from curious eyes and being kept up to 6 months (sometimes even longer). Later the exposed sheet of paper is taken from the camera in a dark room and scanned as a negative. Surprisingly the resulting images are color even when a monochrome photo paper is used. During the exposure movement of the Sun is fixed (bright lines). From the photograph you can even tell what days were cloudy – short cuts in the Sun-traced lines are made by clouds covering the Sun.