Quote:
Originally Posted by aquablue
What the fook is wrong with the glass, Alliance?
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Nothing. In fact, it's pretty damn similar to the much vaunted glass on the Shard. Only difference is that the geometry (and the fact there's more buildings to reflect) of the WTC tower makes the surface defects more noticeable. Neither building is using polished or ground plate glass, and since all hi-rise windows are heat tempered, there's going to be distortions. Angle of viewing, angle of the reflected object, distance of the reflected object all impact the perception of surface defects. It's why, if you only look at a few photos of each, it looks like they're using cheaper material in the WTC. They are not, in fact they probably overspent on materials given the minor difference between stainless steel (as used at the WTC) and galvanized steel (used pretty much everywhere else). They just didn't go WAYYY overboard and had the plates machine polished like a telescope lens.
Based on my extensive research while working on my models, you're going to get a more noticeable distortion if you're looking straight at the glazing (90* angle)at a reflected object directly behind that's some distance away. If you view the glass at an oblique angle and look at a reflected object that's both close and also obliquely angled from the glass, it's going to look almost optically perfect.
I could probably write a short book on the perceived optical effects of glass and reflective coatings. Most of the work on my models has involved studying how light, reflectivity, angle and other factors alter your perception of the reflections and color of the glazing.