BibTeX:

@article{IJIRSTV1I10067,
     title={STUDY ON SOLAR WATER BULB-A LITER OF LIGHT},
     author={Vaibhav Rajendra Bansod and Amey Ashok Wandile},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={1},
     number={10},
     pages={256--259},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV1I10067.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

The solar bottle bulb is made out of a used plastic soda bottle or water bottle, which is filled with water and liquid bleach. The bottle is then fixed into a hole in the roof. While light streaming through just the hole would come in through a single, straight, narrow light beam, the water in the solar bottle bulb refracts the light so that it can illuminate a larger space, 360 degrees around. The bleach keeps the water clean by preventing algae from forming. The solar bottle bulb gives off 55 to 60 watts of clear light, and lasts up to 10 months. This innovative light bulb provides low-income manila households with light - while traditional windows can easily crack or leak during typhoon season or other severe weather, the solar bottle bulb brings even more light in and helps save money and energy. Not only do the bulbs improve the lives of families, but they also improve the future and health of the environment by significantly reducing plastic waste.

solar energy, refraction of light, water treatment