A biplane is an aircraft that has two wings stacked one above the other. This design provides increased lift and stability, making biplanes particularly effective for short takeoffs and landings. They were commonly used in the early 20th century for military and civilian purposes, including barnstorming and aerobatics. Biplanes typically have a smaller wingspan compared to modern monoplanes, which have a single wing. Famous examples of biplanes include the Sopwith Camel, used during World War I, and the Stearman Model 75, often seen in flight training. Their unique design continues to capture the interest of aviation enthusiasts.