thumb|upright|175px|A railroad brakeman's signal lantern, fueled by [[kerosene.]]
A lantern is a portable light source, historically fueled by kerosene, that was used by railroad workers like brakemen to signal and illuminate areas during their work. These devices were essential tools for railroad operations before modern electric lighting became standard.
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thumb|upright|175px|A railroad brakeman's signal lantern, fueled by [[kerosene.]]
A lantern is a source of lighting, often portable. It typically features a protective enclosure for the light sourcehistorically usually a candle, a wick in oil, or a heated mesh, and often a battery-powered light in modern timesto make it easier to carry and hang up, and make it more reliable outdoors or in drafty interiors. Lanterns may also be used for signaling, as torches, or as general light-sources outdoors.
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