How It Works
The plastic bottle is filled with only water and bleach. The liquid inside the bottle harnesses the light from the sun, capturing and diffracting the light to all parts of the room. It is equivalent to a 55 watt light bulb.
What 's the Technology
It consists of a 1.5l PET bottle filled with purified water and bleach (10 ml). A special glue is used to bond and seal the bottle to the roof. Adding the bleach to the water makes sure that the water stays clean and transparent without algae growing inside and turning the water green.. http://currystonedesignprize.com/winners/2012/liter_of_light Liter of Light, Manila, Philippines
2012 Curry Stone Design Prize Winner
Hundreds of millions of people live in informal settlements worldwide. Many of these chockablock dwellings lack windows or adequate daylighting, and in tropical locales are often made darker by extended roofing favored for protection from rain and hot sun. Residents of informal settlements often resort to kerosene, candles, or inventive wiring for light, risking health and safety in the process. Many simply go without.
Proper electricity is not a common option, especially in the Philippines, which has the highest electricity rates in Asia. Filipino entrepreneur and activist Illac Diaz created Liter of Light to provide informal settlements in his country with a cheap daytime lighting source that can be produced and distributed locally.
The solution is Diaz’s figurative “liter of light,” a clear plastic soda bottle filled with water and installed in the roof as a skylight. The water refracts the sunlight as it streams through the bottle, dispersing the rays 360 degrees, thereby illuminating the entire room. The recipients of the solar bottle bulbs, who pay about $1 for the bulb and installation, save money on electricity and cut back on the use of kerosene, candles, and other fuels that
References: | |Please help improve it by rewriting it in an encyclopedic style. (January 2013) | |[pic] |This section uses first-person ("we") excessively | |2013) | There are about 350-400 million people living below the poverty line in India in which the rural areas constitute 75% of the total