Have you ever strolled barefoot along the beach on a sunny day and felt the warm sand underneath your feet? Or held a warm mug? If so, then you have felt radiant heat. Objects absorb radiant heat until they are the same temperature as the heat source, after which the heat slowly escapes to other areas that are colder.
A good example is a car that offers two types of heat. The first is from the heating vents forced
hot air and the other is from heated seats (radiant heat). Both contribute to warming
the environment yet their qualities are very different. Forced hot air from the vents tends to be dry, dusty and even loud. Conversely, heated seats
are comfortable, quiet and extremely effective.