Impression Sunrise from the 1874 Impressionist Show was one of Claude Monet's paintings in his series studying the effects of light and atmosphere on the Cathedral of Rouen at different times of day. In the painting, form and substance vanish as light transforms objects and surfaces into atmospheric spaces. Monet worked outdoors, painting plein air to capture how color was not the property of an object but how light controls color intensity and how it is affected by the time of day and movement of the sun. The painting inadvertently founded the name of Impressionism for the loose, atmospheric style that focused on the effects of light and color.