Edisons are a type of electrical device used to produce light. They are named after Thomas Edison, the American inventor who developed the first practical incandescent light bulb in the late 19th century. Edisons work by passing an electric current through a filament, which then heats up and emits light. These devices revolutionized indoor lighting and contributed to the widespread use of electricity in homes and businesses. Edisons are now commonly found in various forms, including traditional bulbs and modern LED lights, which are more energy-efficient and have a longer lifespan.