“Mystics have long claimed that ailments first become manifest within the etheric or electrical envelope of the body and from there are transposed on the physical. This concept has been demonstrated with other life forms….It seems that the disease surrounds the trees before it actually enters the material substance of the trees. The infrared reveals the field of the disease before entrance is gained and measures can be taken at an earlier stage.”

“The Secret Power Of Pyramids”
by Bill Schul and Ed Pettit