A lamp is a device that produces light, typically used for illumination in homes, offices, and public spaces. It can be powered by electricity, batteries, or fuel, and comes in various styles and designs. Common types of lamps include table lamps, floor lamps, and wall-mounted fixtures. Lamps often use light bulbs, which can be incandescent, fluorescent, or LED. The choice of bulb affects brightness, energy efficiency, and color temperature. Lamps can also serve decorative purposes, enhancing the aesthetic of a room while providing necessary lighting for activities like reading or working.