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A flashlight (also called a torch) is a portable electric spotlight which emits light from a small incandescent lightbulb, or from one or more light-emitting diodes (LEDs). The light source is mounted in a housing which contains a parabolic reflector, a clear protective lens, a power source (typically electric batteries), and an electric power switch. While most flashlights are intended to be held in the hand, there are also helmet-mounted flashlights designed for miners and campers. Some types of flashlights can be powered by hand-cranked dynamos, electromagnetic induction or recharged by solar power. The name flashlight is used mainly in the United States and Canada. In other English-speaking countries, the more common term is torch or electric torch