Now setting its sights on a million homes, the organization behind
this remarkably cheap approach to solar home lighting has already
transformed the lives of thousands who were previously living in the
dark.
Installed in the metal roofs of windowless shacks, bottles of water
help spread incoming light while the bleach keeps each bottle clean and
clear, resulting in an output equivalent to that of a 60-watt bulb.
These light bottles reduce the fire danger posed by poor electrical
connections, cuts down on the cost of electric lighting and encourages
recycling at the same time.
But a big part of the brilliance of the endeavor, pardon the pun, is
in the simplicity of installation: effectively anyone can scavenge the
major materials involved and teach others how to put them in place.
A Liter of Light grew out of
an idea by Alfredo Moser from Brazil, enhanced by MIT students and aimed
at addressing a problem facing millions in the Philippines: the
absolute absence of natural light in their often-informal dwellings.
Their latest goal is to raise funds to install these light bottles in
homes across Manila.
Source - http://weburbanist.com/2014/03/27/liters-of-light-diy-solar-from-used-bottles-bleach-water/
