“Whitest paint on record reflects 98 per cent of sunlight to cool buildings
Researchers at Purdue University have developed an ultra-white paint that reflects 98 per cent of sunlight and deflects infrared heat, allowing buildings to cool below the surrounding air temperature.
The paint, which the university describes as the whitest paint on record , owes its cooling power to barium sulphate – a pigment derived from the mineral barite – and reflects up to 98.1% of sunlight.
Top image: Xiulin Ruan holding a sample of the paint. Above: infrared photographs show that the paint cools a surface below the ambient temperature
Unlike the titanium dioxide used in traditional white paints, which absorbs UV light, the barium sulphate is also capable of deflecting infrared heat away from the surface to which it is applied.
Please keep Anish Kapoor away from the whitest white paint
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The Latest: Navajo Nation reports 4 new virus deaths
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By The Associated Press
WINDOW ROCK, Ariz. â The Navajo Nation on Saturday reported 18 additional confirmed COVID-19 cases and four more deaths.
The pandemic totals on the tribeâs reservation that includes parts of Arizona, New Mexico and Utah increased to 30,164 cases and 1,257 deaths.
Tribal President Jonathan Nez encouraged people to celebrate the Easter weekend safely while following COVID-19 protocols. Nez said those including staying home as much as possible, wearing a mask, practicing social distancing, avoiding large in-person gatherings, and washing hands often.
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THE VIRUS OUTBREAK:
VACCINES: More than 104.2 million people, or 31.4% of the U.S. population, have received at least one dose of a coronavirus vaccine, according to the Centers for Disease Control and Prevention. Some 59.8 million people, or 18% of the population, have completed their vaccination.