The sun’s energy can be increased when focused on a smaller area—just ask any kid who has burned holes in a sheet of paper with a magnifying glass. The same concept has been used for small camping stoves and enormous solar furnaces. And while…
The sun’s energy can be increased when focused on a smaller area—just ask any kid who has burned holes in a sheet of paper with a magnifying glass. The same concept has been used for small camping stoves and enormous solar furnaces. And while…