Aura

Aura n : an emanation, breath or radiation that is invisible to the naked eye. It is often thought to be an invisible surrounding glow emanating from each individual.  Some persons believe that they can actually see the aura of a person and depending on its colour and form, this is taken as an indication of the mental and physical well being of that person.  Kirlian photography deals with the supposed art of photographing this type of phenomena.