Shark eyes (was: ???????Question??????

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On  2 Apr 00 at 13:27, Ruth Thompson wrote:

> You invited questions or comments of any kind on your webpage so as
> weird as my question is
> I'll take you up on your offer and ask this:
> 
> My friend has a pair of those cheap low grade night vision binoculars.
> After playing around with them for a bit there's something that I just
> can't grasp when it comes to how they function and I hope you can
> explain it to me, I'd really appreciate it.  Here's what happened.  I
> was viewing my friend and his dog,  he was a bit fuzzy looking but I had
> a difficult time seeing his eyes.  I was able to see his dogs image as
> being very crisp no glow around him and his eyes were dark until he came
> 
> close to me then they glowed bright white.  I had my friend take the
> camera and look at me with the dog.  He became very nervious and said my
> eyes were also glowing a bright white.  What I don't understand is why
> through night vision was my friend able to see white from my eyes and
> I wasn't able to see any color when looking at his eyes.

Not sure how to explain the difference, but the eiry white glow of 
eyes is also common with infrared photography, and called 'shark 
eyes'.
So don't start the exorcism yet, and don't kill the dog!....;-))))

Your friend didn't wear contact-lenses, did he?
(possibly IR-proof plastic)

If you want to explore this topic indepth, I recommend you subscribe 
to the Infrared Photography Mailinglist....

(CC'd to the list already, maybe someone has noticed this eye-diversity 
before)




--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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