Quote:
Originally Posted by BuildingDude
Not sure what color theory is, and I will admit that It's been a while since I studied physics. I recall something about as temperature increases, the wavelength of the light increases. This effects how the color is seen, and how the light is reflected.
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If temperature has an effect on color, it's probably minute, if not imperceptible to the human eye. A blue car doesn't look blue-green on a hot day in summer and blue on a cold day in winter.
In my experience, the sky/atmospheric conditions coupled with the glass' intrinsic qualities make up a majority of the color differentiation we perceive.
On a truly overcast day, when the lighting is 'neutral' and totally diffuse, you'll see the glass' intended* coloring. On a partly sunny/sunny day, you'll see the blue sky (and clouds) reflected in the building.
The quality and intensity of that blue will vary based on the time of day, time of year, and which side of the building you're on relative the sun...and the base glass color, opacity, and reflectivity. The shadow side of the building may reflect the brilliant blue sky behind the viewer, while the lit side could look a little dull from the direct sun creating glare. Humidity is another factor. On a cool crisp 'dry' day the blues are more vivid, while a hot, humid day in summer can really tone down the blue.
Sunrise and sunset offer another variable. If there are some clouds and/or particulates in the atmosphere, there may be a lot more yellow/orange light scattering about and/or reflecting off the building's glass.
*I say intended because color is relative; what you eye sees is the color its is in that instance.