AboutKarl Ryberg is an architect, light psychologist, and researcher whose speciality is using precision light for therapy and design. He has invented a series of advanced therapeutic projectors and runs the Monocrom in Stockholm. Karl lectures worldwide on the creative use of light for health, happiness, and healing. He has written several books on the subject and has appeared many times in the media. Karl speaks several languages and also reads Braille. He is a numismatist and watercolor paints as a hobby.