1M homes illuminated without electricity during...
1M homes illuminated without electricity during the day? A bottle of water = a bulb of 40 watts http://t.co/DagCxct2cX
August 15, 2013
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The light inventor who is poor but proud
Alfredo Moser's invention is lighting up the world. In 2002, the Brazilian mechanic had a light-bulb moment and came up with a way of illuminating his house during the day without electricity - using nothing more than plastic bottles filled with water and a tiny bit of bleach.