11 Mar
2010
11 Mar
'10
11:08 p.m.
On 11/03/2010 21:57, Brian Lanning wrote:
I heard that the DEA has helicopters that fly around
looking for light of a
certain wavelength (probably high pressure sodium) leaking from buildings,
then show up and raid the place.
A couple of years ago the police here raided a colleague's house because
the police helicopter's IR cameras showed the house as emitting a lot of
energy, and that's a sign of cannabis farms. In fact, rather
embarrassingly, it was just a case of poor insulation.
I doubt the DEA's choppers are actually looking for visible light --
just "bright" infrared emission.
http://www.telegraph.co.uk/news/2474184/Poor-insulation-led-to-drugs-raid-o…
or if you want to see pictures from the chopper IR camera
http://www.dailymail.co.uk/news/article-1039768/Police-raid-home-Blunkett-B…
--
Pete Peter Turnbull
Network Manager
University of York