Let the sun shine in: Redirecting sunlight to dark urban alleyways
Tuesday, April 15, 2014 - 02:16
in Astronomy & Space
In response to ever-crowded urban conditions in developing countries, researchers in Egypt have developed an inexpensive way of re-directing natural sunlight into dimly lit streets and alleys, where lack of sun is linked to health problems. The new optical device can increase brightness in alleyways by up to 400 percent.