Panels are flat, usually rectangular pieces of material used in various applications, such as construction, art, and electronics. They can be made from wood, metal, glass, or plastic and serve different purposes, including providing structural support, creating visual displays, or housing electronic components. In the context of art, panels often refer to surfaces where artists paint or draw. For example, a canvas panel is a popular choice for painters, while wood panels can be used for more traditional techniques. In electronics, circuit panels house components and connect them to form functional devices.