[GRLUG] OFF TOPIC - Speaking of Infrared...

[Bob Kline]

How cool was the room?

You seen to have a short sleve
shirt on, but I think I can see the
back of a chair,  walls in the the
background.  Is it a big room?

Jet gets to the fact that because
you stand out some the room might
be large, and-or cool

    -- Bob


On Thu, Jan 28, 2010 at 8:18 PM, Michael Mol <mikemol at gmail.com> wrote:

> On Thu, Jan 28, 2010 at 8:02 PM, Bob Kline <bob.kline at gmail.com> wrote:
> > On Thu, Jan 28, 2010 at 6:03 PM, Michael Mol <mikemol at gmail.com> wrote:
> >>
> >>
> >> The chief problem with "darkvision" as it applies to passive near-IR is
> >> that there is a lot of ambient near-IR radiation that's not related to
> >> warm bodies.
> >>
> >> In short, your warm body radiation in the near-IR will be there, but
> >> largely drowned out by the ambient near-IR radiation.**
> >
> > The peak wavelength for a human body
> > thermal spectrum is 10 microns - in the so
> > called long-wave infrared range.  You shine
> > if you're standing out in the snow,  but the
> > human body is not really very hot.  About
> > the same as your house interior, which is
> > that temperature, by design. So you don't
> > stand out much.
> > See http://en.wikipedia.org/wiki/Infrared
> >     -- Bob
>
>
> http://www.flickr.com/photos/28208534@N07/3681419505/in/set-72157620862996406/
>
> I don't?
>
>

What kind of image is this?  i.e., how
is it corrected?
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