We understand IR reflections

Or do we this image was taken standing smack in front of this set of windows and had no reflection the next window to the left has the standard reflection as one would expect staring straight into the glass with the camera.
Both images were taken at the same angle why does one have a reflection and one does not. The answer to this was never mentioned in any class that I have taken, field tested only

147 Whitworth PC 1-28-12 128.jpg

Angle of incidence


I can see the glass is not parallel to the camera lens.

Why would I expect to see a reflection?

Lets wait until Chuck, Bill or Dave comes along;-)

winder’s are installed backerds :slight_smile:

and are you flipping us the bird?

Good catch I did not see that … Thanks… Roy
I did see the chimney is on an angle .

y’all ain’t from around here
that’s the okie peace sign

reload the film

y’all ain’t from around here
that’s the okie peace sign

Ya noticed did ya, and no the winders are not backards;-):wink:

Plexiglass (e=.86) or possibly plastic film applied to interior

So what is the reflectivity?

At least you were thinking something beside angle and yes there was a tint film applied on the inside and a canvas type see through curtain similar to a car wrap on the exterior here is a digital of the exterior

147 Whitworth PC 1-28-12 010.jpg

Good call Chuck.

If there is no reflection, the subject is not reflective!

Just because there is glass in there does not mean it will reflect.

Kirchhoff’s Law of Thermal Radiation:

If there is no reflection, p = 0. As we know glass has a high “p”, there must be something in the way.

I posted a similar issue here a while back where the windows in a sky-rise were put in backwards.