In metaphysics, Aura refers to the energy field emanating from the surface of a person or object. This emanation is visualized as an outline of cascading color and may be held to represent soul vibrations, chakric emergence, or a reflection of surrounding energy fields.
Auras may be viewed by the naked eye, though some psychics, like Edgar Cayce, believe this ability weakens with age. Focused training may improve one's ability to see auras. Layers of aura are separate and distinct yet connected to all the remaining layers. In the books of Carlos Castaneda auras are referred to as luminous cocoons.
Modern New Age metaphysics identify the aura as electromagnetic fields. The existence of electromagnetic fields around every object in the known world is a scientifically proven fact. What is debatable is whether or not humans can see these electromagnetic fields as colors with the naked eye. This claim is considered paranormal because devices that sense electromagnetic fields at magnitudes many times smaller than that which allegedly exists in auras have recorded nothing.
However, these energy fields are sometimes claimed to be documented by a rare form of photography called Kirlian photography.
These claims are vigorously denied by debunkers about paranormal activity. The magician James Randi, for example, has for many years (as of 2004) offered one million US dollars to any person capable of repeatedly detecting auras, no one has yet succeeded, (though at least one has tried and failed).