A light bulb that works without electricity! 💧💡☀️
These people make holes in the roofs of their houses and insert plastic bottles into them. In reality, they're creating a kind of light bulb that works without electricity. This method is used to illuminate homes and is called a "solar bottle."
First, the bottle is filled with clean water. Bleach is also added to prevent bacterial growth.
After the water bottles are tightly sealed, they are installed in the holes in the roof using metal frames or glue to prevent water from entering.
When sunlight hits the plastic bottle, the light is refracted by the water, illuminating the house like a light bulb.
This system is used primarily in poor areas without access to electricity.