How water bottles create cheap lighting in Philippines
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Uploaded by paveldunghd on Sep 19, 2011
A simple initiative in the Philippines is bringing a bit of brightness into the lives of the country's poorest people.
The project is called "Litre of Light", and the technology involved is just a plastic bottle filled with water.
It's an environmentally-friendly alternative to an electric light bulb, and it's virtually free.
The BBC's Kate McGeown reports from Manila.
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wat bout removing some portion of the roof n replace it with a flat glass to let the sunshine in straightly n safe while raining too?
morchalabi 1 day ago
but u no dude?! wat if it rains? guess wat? u already have holed ur roofs!
morchalabi 1 day ago
first of all that's cool n wise. "sharing this technology" !!! r u kidding me?!!!!!! technology?!
morchalabi 1 day ago
what about at night time?
coolfann1 3 weeks ago
Inspiring.
0pacity 1 month ago
I WANT A CAR
TaviYamato 2 months ago
would glass bottles be better?
xxfroobxx 3 months ago
how did the ipad get invented before this really?
MrBluecheese420 4 months ago
@wlexxx Water refracts light; causing it to bend and travel in different directions. Because the bottle has those curves at the bottom, it makes the light shine in a wide area. If you didnt put water in the bottle, it would be the same as putting a hole in the roof; the light only shines in that small area where the hole is.
Make sense?
SC2Gunz 4 months ago
questions though
seems obvious, i can;t believe it is a new thing
why does water have to be in the bottle?
would also be nice to be able to replace / remove the bottle for ventilation
hard to do for non - tin roofs
wle
wlexxx 4 months ago