Producers and designers are starting to create more free-energy devices. Finally humans found a good use for sound apart from polluting the environment.

This device is an ingenious one that turns sounds, into electricity. I don’t know exactly if the amount of energy depends on the intensity of sounds but it seems that this device was created for runways, and with the help of the electricity they produce they also can be used as runway lights, at the same time.

Also a good use for those devices will be in crowded cities or highways, streets, near waterfalls or reavers or in a place where thunder storms are frequent.