Sunlight-powered ''bulbs'' made from plastic bottles light up homes

Sunlight-powered ''bulbs'' made from plastic bottles light up homes

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2017-03-16 18:03:53

It’s surprising how simple the design of a solar bottle light is – take an empty plastic bottle, fill it with mineral water and a few drops of bleach, and cement it halfway through a small metal roof sheet (the kind used as roofs in Manila’s slum areas). Then cut out a small piece of the actual roof, place the sheet with the bottle on top of the hole, cement any cracks, and voilà! Let there be light.