The idea of using plastic bottles for daylight was first pioneered by Alfredo Moser from Brazil in 2002 and by MIT students in 2011. You can light up a dark room by installing a water or soda bottle filled with water and bleach in the roof. The water will refract any sunlight falling on the bottle, mimicking an electric light bulb of 40-60 W. Learn about the Solar Bottle Bulb and other appropriate technologies through our development resources
