Karl RybergKarl 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. He lectures worldide 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. He speaks several languages and also reads Braille. He is a numismatist and watercolor paints as a hobby. Read More Read Less