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World's Whitest Paint Ever Reflects 98% Sunlight, Cools Buildings, Help Curb Global Warming sciencetimes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sciencetimes.com Daily Mail and Mail on Sunday newspapers.
Purdue creates whitest paint on Earth, could fight climate change localmemphis.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from localmemphis.com Daily Mail and Mail on Sunday newspapers.
08 юли, 2021 На този ден през 1709 г. - Битката при Полтава по време на Великата Северна война (1700-1721). Руската армия с численост от 40 000 души под командването на Петър Велики побеждава шведската армия под командването на крал Карл XII. От 25 000 души в шведската армия 10 000 са убити и ранени. От руската армия 4500 са убити и ранени. Битката слага край на статута на Швеция като основна сила и бележи началото на руското превъзходство в Източна Европа, припомня БТА. На този ден в България: 1879 - България установява дипломатически отношения с Франция на ниво ....
Purdue Professor Xiulin Ruan and his team have developed the world s whitest white paint (Credit: Joseph Peoples/Purdue University) Given that white was one of the first colors used in art in the 15th century, one would think that there is little room left to improve its whiteness. It turns out that is far from the case. A team of researchers led by Xiulin Ruan, a professor of mechanical engineering at Indiana s Purdue University, recently revealed an ultra-white paint that they believe could even help combat climate change. The scientists, who spent six years creating the world s whitest white paint, assert that the options currently available make surfaces warmer rather than cooler. That s because they only reflect 80 to 90 percent of the sunlight and cannot make the exterior cooler than the surrounding temperature. The newly-revealed ultra-white paint not only reflects 98.1 percent of sunlight, but also prevents surface infrared heat from being absorbed. ....
Xiulin Ruan, a Purdue University professor of mechanical engineering, holds up his lab’s sample of the whitest paint on record. Jared Pike/Purdue University At noon on a sunny summer day, the temperature of a conventional dark-colored flat roof can reach 150 degrees Fahrenheit (65 degrees Celsius), according to the U.S. Department of Energy. That heat will warm the inside of a building or a house as well, making it necessary to use air conditioning an energy expenditure that in turn often requires burning fossil fuels at electrical power plants, whose emissions contribute to the progression of climate change. It s a bedeviling problem that might be easily solved, if we only had roofs that reflected solar energy back into the sky, instead of absorbing it. ....