History of Thermal Imaging
Heat differentiation, the use of Thermography, is ancient and dates to the time of the pyramids. The first recorded use of temperature associated with human ailments and disease appeared in a papyrus from 1700 BC. By 400 BC, doctors used a very primitive form of Thermography by applying a thin layer of mud to the patient’s body. They watched and monitored the patterns made by the different speeds of drying mud and credited those patterns to hot and cold temperature on the surface of the body.