Re: Groom Lake photographs from 06/30/2008

On Sep 3, 7:25�am, Hiram <thedeerhunter...@gmail.com> wrote:

I didn't know IR can see through dirt!


Its special IR


IR does not see through dirt. Now it is possible to see temperature
differences on the surface with IR indicating a particular piece of
dirt has been disturbed. IR is also useful in detecting camouflaged
structures since camouflage does not have the "Wood" effect.

There is much confusion regarding IR, well on the internet. ;-) This
is a case where reading books and technical papers will serve you
better than what you read on the net.  For instance, there are no
shortage of posts on the net that indicates that IR can see in the
dark. [Well, yeah, if you have an IR illuminator.] Then there is the
confusion between night vision (light amplification) and IR. For
instance, you can use an IR illuminator with night vision, but if you
need an illuminator, you are not very stealthy.

I have an IR filter I got from a military vehicle (flea market
purchase, not midnight auto supply). I have placed it over a spotlight
and made a wicked IR illumantor. I pointed it at the camo dudes and
they didn't indicate anything unusual, so I don't think they use much
in the way of night vision.