The onyx-colored buoyant ball pit joins other inventive ... In the meantime, we’ll see if the army of li’l plastic balls keeps the drought at bay. [Los Angeles Department of Water and Power ...

The old-style fill tube uses a plastic buoyant ball screwed on a threaded rod that lowers when the toilet is flushed, opening the valve to allow the tank to refill. As water fills the tank ...

It's a common swimming pool game: Force a buoyant ball underwater and let it go. The ball springs to the surface and jumps into the air. But, submerge the ball deeper underwater and the effect is ...