Solar Bottle Bulbs Light Up Dark Homes
The “Moser Light” involves taking plastic bottles, which are usually just thrown away or recycled, and filling them with water and bleach to draw on a basic physical phenomenon: the refraction of sunlight when it passes through a water-based medium. Brazilian innovator and mechanic Alfredo Moser has taken the common plastic water bottle and created a low-cost lighting solution for dark spaces. Often makeshift homes lack decent lighting or a good design that lets the light in during the day. This means that it may be a bright, sunny day outside, but inside the home or workplace, it is very dark and reading or working is difficult.
It is a simple idea: Holes are drilled in the ceiling of a room and the bottles are placed in the holes. The liquid-filled bottle amplifies the existing sunlight (or even moonlight) and projects it into the dark room. This turns the plastic bottle into a very bright light bulb that does not require any electricity.
Moser uses a solution of two capfuls of bleach added to the water to prevent anything growing in the water such as algae because of the exposure to sunlight.
“The cleaner the bottle, the better,” he said.
Polyester resin is used to seal the hole around the plastic bottle and make it watertight from rain.
Moser’s bottle innovation can produce between 40 and 60 watts of light.
Liter of Light, run by the Myshelter Foundation, offers instructions on how to install the lighting system on its website. – (September 2013)
How to make the “Moser Light” (above) and the light installed in the roof (right).
How to assemble the “Moser Light”.