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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Thomas A Watson who wrote (22335)	7/19/2008 8:11:08 PM
From: neolib	Respond to of 36917

Have you ever noticed that light goes THROUGH car glass for a pretty broad range of angles? From looking at his data, and considering the typical relative angles of front/back windows to hoods/trunks, I would assume that most of the increased temps on front windows in fact comes from radiation from the dash, i.e. it is the greenhouse effect. Sunlight goes through the windshield, is absorbed by the dash (which because of the typical low angle on the windshield is the only well exposed interior surface) gets re-emitted as IR which then gets absorbed by the glass which boosts the glass temp. How else do you explain the relative temps of the different window positions, since we can assume the still air inside the car is of approximately equal temp throughout, yet the windows have significantly different temps? Regarding angles, off the top of my head reflection is not wavelength dependent, but refraction is. Front surface mirrors don't show chromatic dispersion, but rear surface ones do.