Hi, I'm glad you made it here, I hope you stay a minute or two. Take a deep breath and let your eyes rest on the square for ten seconds or so, then continue reading. The animation visually represents the exposure time in cyanotype printmaking, the moment when UV rays trigger the chemical reaction that forms the light-sensitive compound. In this moment, the emulsion shifts from yellow-green to bronze-grey. When an exposed object or film negative is lifted from the print surface, the covered surface area appears light blue. The infamous Prussian Blue color, is seen later once the print is rinsed in a cold water bath (distilled water is best). The rinse relieves a chartreuse stain caused by unreacted ferric ammonium citrate. Adding hydrogen peroxide to the rinse will oxidize the blue further, deepening the color and increasing the permanence. Contrary to this specific transition, exposure times range from 20-45 minutes, or longer depending on UV ray intensity. Environmental factors such as the time of day, season, and proximity to the sun can influence the quality of the print. Additionally, seasonal variations in weather conditions such as cloud coverage and humidity can also influence the quality of your print. When the sun's extremely hot it exposes like lighting ⚡.