Blacklight Paint

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Blacklight ink or blacklight-reactive Ink is ink that glows under a black light, a source of light whose wavelengths are primarily in the ultraviolet. The paint may or may not be colorful under ordinary light. It is also known as luminous paint or fluorescent paint. Blacklight paints can be mixed with similar shades of normal pigments, "brightening" them when viewed in sunlight. DayGlo is a tradename, and a common name for these sorts of paints. The invention of fluorescent paints is attributed to Robert Switzer, who was confined to a dark room after a fall, and his brother Joseph, who was a chemistry major at UC Berkeley, in 1934. They took a black light into the storeroom of their father's drugstore looking for naturally fluorescent organic compounds and from that developed paints.