World's Whitest Paint Reflects up to 98.1% of Light
"Researchers from Purdue University developed a paint so white that coating a building with it could reduce or even eliminate the need for air conditioning in a building...
The team developed their paint so as to reflect sunlight away from buildings. Because the paint they developed absorbs less heat from the Sun than it emits, it can even cool the surface on which it is coated, reducing the need for air conditioning.
The Purdue team claims that covering a roof area of approximately 1,000 square feet (92 square meters) would allow the equivalent cooling power of 10 kilowatts — which is more powerful than the central air conditioners used by most houses."
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