The design of a typical flashlight consists of a light source is mounted in a parabolicreflector or other form, a transparent lens to protect the light source of the damage, the energy source (i.e. battery, and a power switch. Electric current from the batteryto a small bulb at the front end of the light which produces a controlled switch is placed between the batteries and the lights. Flashlights are generally used in places that are dark to illuminate anything in the vicinity. The flashlight can be used by anyone for example in case of death, for the mechanic, the correct electrical installation,the workers in the mines, and so on. In the context of communication, the flashlightcan be used to transmit morse code in the Scouts.