Solar Bottle Bulb in Philippines Millions of poor homes in
Philippines – and a lot more around the world – in the dark
because the metal roof block all light and no connection to
electricity in informal settlements. A student of MIT found that
one-liter plastic bottle filled with water and bleach and then
mounted on a metal roof is a simple way to light homes that have
no electrical connectivity or natural lighting. It was called
Solar Bottle Bulb. How to Make, How to Work and Spec of Solar
Bottle Bulb - Fill plastic bottles with water and bleach then
capped; bleach works to make the water clear and also to prevent
fungus or microbe. - Make holes in the metal roofs, insert the
bottle and then sealed to avoid leaks when it rains. - Plastic
bottles refract sun light and pushed into every corner of the
home rather than to highlight one area like an ordinary lamp. -
Simple technology that can be installed in less than an hour,
lasting for five years, and equivalent with 60-watt light bulb.
As part of their Solar