Tilt-A-Whirl, also known as Waltzer in Europe, is one of the best-known flat rides, designed for commercial use at amusement parks, fairs and carnivals in which it is commonly found. The rides are manufactured by Larson International of Plainview, Texas. The ride is commonly known for making riders experience nausea. The Tilt-a-Whirl is a platform-type ride, consisting of seven freely-spinning cars that hold four (sometimes three) riders each, which are attached at fixed pivot points on a rotating platform. As the platform revolves, parts of the platform are raised and lowered, and the resulting centrifugal and gravitational forces on the cars cause them to spin in different directions and at variable speeds. The weight of passengers in these cars may intensify or dampen the spinning motion of the cars, adding to the unpredictable nature of the motion. Mathematicians call this unpredictable nature chaotic motion. Physicists Bret M. Huggard and Richard L.