Gravity-powered light bulbs

It is almost 150 years since the invention of the light bulb, but about one billion people in the world are still deprived of the blessing of electricity. Energy is obtained by inserting which is used to light the bulb.

This technology has been found to be useful for night lighting in remote areas of Asia and Africa where electricity has not reached, which does not produce smoke like traditional lanterns and the light is much higher. There is no need to spend on fuel and kerosene in this newly made bulb.

In the old system called Gravity Light, a basket weighing 10 to 16 kg was tied to a wire and the weight was brought up to 6 feet. The weight kept coming down and the bulb was emitting light.

Now this system has been further improved, now instead of tying the weight, only the wire is stretched in which the attached spring keeps on collecting kinetic energy which is converted into electricity, thus the bulb stays lit. Mobile phones can now be charged under this system through modern technology.