Shulou(Shulou.com)11/24 Report--

CTOnews.com, July 16 (Xinhua) in 2021, researchers at Purdue University in the United States said they had developed the whitest paint on earth, which can reflect more than 98% of the light. If this kind of paint is used in buildings, it can reduce the surface and indoor temperature of objects, thus saving the electricity consumption of air conditioners. And our planet is now facing the crisis of global warming, if these coatings are used on a larger scale, such as covering part of the whole earth, will the problem of global warming be solved?

Jeremy Munday, a professor of electrical and computer engineering at the university of California, Davis, believes that if a paint that reflects light, such as Purdue university, is used to cover 1-2% of the earth's surface, enough light can be reflected back into space, reducing the amount of heat the earth absorbs, thus stabilizing global temperatures. In other words, this may be a solution to climate change. Moreover, Professor Mondi told the New York Times that it would not have much impact on the universe. "it's like pouring a glass of ordinary water into the sea," he said. "

However, it is not easy to cover 1-2% of the earth's surface. The total surface area of the earth is about 197 million square miles (most of which is water), so it needs to be covered with about 2 million to 4 million square miles of paint. As a reference, the total land area of the United States is only more than 3.5 million square miles, so the whole United States needs to be painted white from east to west. It takes a lot of paint. Assuming that the new paint, like ordinary commercial paint, can cover 400sq ft per gallon, it would take at least 139 billion gallons of super white paint to cover 1 per cent of the earth's surface. If you cover 2%, that number will double. Moreover, this does not take into account difficult places such as oceans, deserts and trees.

In fact, using white to lower the temperature is not a novel idea. For example, many users buy a white car because it will make the temperature inside the car colder. Many parts of the world have begun to use white paint to cool down, and the new paint from Purdue University will help, but it also shows that we still have a long way to go to solve the problem of climate change.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.