In many countries, it’s more valuable than cartridges, gasoline or oil. If you are a woman, it is a natural disasters. It is most importantly, water disinfection, for…
SODIS – disinfection of water by sunlight
sunlight
Making fire in the desert with sunlight, making fire with a plastic bottle with a little water.
The main natural resource desert is bright sunlight. However, after sunset, due to the lack of cloudiness, the earth quickly gives off the received heat. Moreover, the temperature…