2014-04-27 04:04:47 UTC
Here is the question:
In some countries people are too poor to pay for electricity . Some people living in small houses with no natural light are using bottles filled with water instead of light bulbs.
The bottles are fitted into small holes in the roof of the house. Sunlight refracts as it passes into and out of the bottle, causing light to spread into the room. This simple device gives about the same amount of light as a 50W light bulb.
Suggest one way this simple device can help improve the lives of people using it?
Thanks :)