Emergency light

An Emergency light is a battery backed lighting device.It is a portable device.An Emergency light helps us when light is cut off.In the ancient times there was no electricity,so people used lamp,candles and other lighting materials to make their house,road full of light from being darkness.Nowadays,because of the electricity people have light life.There is two kinds of electricity static and current electricity.The electricity which we use is current electricity.So,because at the time of load shedding,people have to blow candle to make light.Nowadays,in developed countries,there are different kinds of lighting materials from which people become happy and free from the darkness.SO,it has been developed.An emergency light helps us in many ways such as in reading the books,for the important works of the offices,factories etc.it is also known as the friends of darkness.