From:	David Woods <david@*******.FREESERVE.CO.UK>
Subject:	Re: thermographic vision-question
Date:	Tue, 2 Feb 1999 23:00:14 +0000

"Davidson, Chris" wrote:
>
> > For the mere cost of a Thaum, David Woods wrote:
> > /
> > / No. Your player is assuming the crap Hollywood version of IR (i.e.
> > / Predator I and II). Assume any solid object (including glass) is opaque
> > / to IR.
> >
> > Okay, I'll bite. How is the Predator version crap? IIRC Predator couldn't
> > see through anything with his IR. I'm genuinly curious :)
> >
> Not with is IR, but with his Ultraviolet vision he
> could. I think he also had sonicvision too.

Really? Irrc the transmission of most glasses drops quite rapidly
<400nm. I would have thought that most objects, opaque in the visible,
would be opaque in the UV range. Unless you know different.

As for Sonar, I can't imagine solid objects being transparent to sound
waves. Although, admittedly it's not my field.

Regards

- David Woods