Floats, or buoyancy, refer to the ability of an object to remain on the surface of a liquid. This phenomenon occurs when the upward force of the liquid, known as buoyant force, is equal to or greater than the weight of the object. When an object is placed in a fluid, it displaces a volume of that fluid, and if the weight of the displaced fluid is greater than the object's weight, the object will float. The principle of buoyancy was first described by the ancient Greek scientist Archimedes. He stated that an object submerged in a fluid experiences an upward force equal to the weight of the fluid it displaces. This principle explains why objects like boats and life jackets can float, providing safety and support in water.