CAIRO, April 18, 2014 — Corrugated, translucent panels mounted on rooftops could be used to bend sunlight into places it normally doesn't reach. Amr Safwat, a professor of electronics and communications engineering at Ain Shams University, said the new panel could be used in any country as a greener, cheaper and more pleasant alternative to artificial light, particularly in urban side streets and alleys. The new light-directing panel, with close-ups. Images courtesy of Optics Express. 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