A lamp is a device that makes light and heat. Lamps usually work with electricity, using a lightbulb. In the United States, a lamp is usually considered a desk lamp or floor lamp. Other sources of light are called 'lights', such as streetlights, flashlights, and headlights, which in some countries are called streetlamps, torches and headlamps. Before electric lamps were invented, gas lamps, oil lamps or candles were used. What is the use of table lamp? Image result for table lamp wikipedia The purpose of a table lamp is to enhance the illumination of a room and mostly add on to the interior décor. Whereas desk lamps or study lamps have a more restricted functioning of providing task light – they are used for specific tasks like reading, studying, and computer work.