To develop the new paint, the engineers used barium sulfate, a reflective compound also found in cosmetics and photo printer paper. Using particles of varying sizes increases the amount of light that the paint can scatter.
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It’s more than just a novel experiment with color.
The researchers say that by reflecting heat away from buildings, the ultra-white paint could reduce the need for air conditioning and help fight the climate crisis.
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"If you were to use this paint to cover a roof area of about 1,000 square feet, we estimate that you could get a cooling power of 10 kilowatts. That's more powerful than the central air conditioners used by most houses.”
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