Radiant energy is used for radiant heating. "Words of Radiance" continues the story, expanding on the Voidbringers and the Knights Radiant. It is obtained by dividing the luminous flux by the radiant flux. All objects constantly emit and absorb radiant energy. Thermographic cameras create thermal images based on the radiant heat energy it receives. It is golden and has the shape of a radiant sun. This means that it absorbs and emits 90 percent of radiant thermal energy. Food is cooked using direct radiant heat. Reflectance of the surface of a material is its effectiveness in reflecting radiant energy. He was as radiant and reddish as the morning sun. Cheese and marshmallows are also toasted by exposure to dry radiant heat. Transmittance of the surface of a material is its effectiveness in transmitting radiant energy. Toast is sliced bread that has been browned by exposure to radiant heat. There are two basic types of infrared radiant heaters. ProRadiant is a series of products to assist in the installation of radiant heating.