's front with an impractical number and variety of headlamps, added for decorative purposes.]] Conaphore. Selective yellow "Noviol" glass version shown.]] A headlamp is a lamp, usually attached to the front of a vehicle such as a car, with the purpose of illuminating the road ahead during periods of low visibility, such as night or precipitation. While it is common for the term headlight to be used interchangeably in informal discussion, headlamp is the technically correct term for the device itself, while headlight properly refers to the beam of light produced and distributed by the device. A headlamp can also be mounted on a bicycle (with a battery or small electrical generator), and most other vehicles from airplane to trains tend to have headlamps of their own. Single small headlamps may also be mounted on a helmet or attached to a strap around the head designed to be worn in situations where light is

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