posted on Oct, 10 2013 @ 02:09 PM
reply to post by macpdm
If they were looking for a suspect, then they would have tracked said suspect with the thermal camera, and when located, lit it up with the night
sun. If they were looking for a body, for instance a recently deceased hiker or car crash victim, they would still have used the thermal imager,
unless the body was either just to far gone, or not far enough. You see, there are two main periods of thermal exchange between a body and the
environment it's found in.
The first, is as the residual heat produced by a living body, leaves the flesh. When the heart stops beating, and the blood stops flowing, the heat
from the body is transmitted into the air, the ground and so on. Then, when gases in the body, natural acids, and of course microbiological and insect
activity set in, more thermal output is created. Either type of heat would register on a thermal imaging camera, although the second period of
significant thermal activity would be a lesser return on a thermal imaging system.
The best times to find a body therefore, are before the heat in the body of a fresh kill has left it, and then after the process of molecular decay
and insect activity begin to break down the body into its component parts. After these two points have passed, assuming an average temperature and
humidity, a human body left above ground can skeletonise within fourteen days, and there's no hope of locating a body in that state using thermal
imaging.