Green is good.

[Natasha]

I didn't know they could see through walls in the first place.

[Natasha]

Right. TI just reads heat. If the wall is cool, it'll appear as dark on the output.

Even plastic wrap and glass can stop full penetration thermal imaging much less a solid wall.

You've lost me.

[Natasha]

Now, that worked for a canvas tent but probably wouldn't work for a concrete or cinder block wall.

Yes, a bit of canvas is much more heat permeable than a concrete wall.

[Natasha]

Right. TI just reads heat. If the wall is cool, it'll appear as dark on the output.

Even plastic wrap and glass can stop full penetration thermal imaging much less a solid wall.

You've lost me.

Most glass you will find will block the Long range IR wavelengths (that's just how it's made anymore) and if you place a pane of glass between you and that system you won't see through it.

I see what you were saying. I thought you were saying that even if the glass is warm you won't see the heat on it.

And I think that they have shortwave FLIRs already on the market that allow you to see filaments inside light bulbs, for example. Pretty cool.

[glitterboy2098]

this is why i prefer Backscatter X-ray technology and Millimeter wave radar for all my "seeing through walls" needs.