Table lamps are often used at home, as they are not only versatile, but also provide a cozy and comfortable atmosphere. Most designs of table lamps feature a base, a shade and a light source. Table lamps can have either a single bulb or multiple bulbs and may have one light switch or several. The main advantage of using a table lamp is that it can be used for reading and task lighting. If the lamp allows for adjustment of the shade direction, then it can be used for both general and task lighting. Task lighting is the process of focusing light on a specific area, usually a work surface. The intensity of task lighting is usually greater than that of general lighting in order to provide adequate lighting for the user. Table lamps are also useful for providing mood lighting and for adding ambiance to a room. Table lamps may come in many different shapes, sizes, colors, and materials. Some are made with brass, nickel, chrome, or even wood. The size of the lamp will depend on the size of the table or bookshelf that it is placed on. Shades can be made of fabric, metal, or other materials. Table lamps provide a simple, convenient way to light a room without having to install permanent lighting fixtures. They are also very affordable and come in a wide variety of styles and sizes, so there is something for everyone.