At the U.S. Global Survey website, an image shows all the world's water collected in a sphere, shown floating ominously ... This image shows blue spheres representing relative amounts of Earth's ...
Researchers manipulated water waves to move ping pong balls with a level of precision that seems straight out of a sci-fi movie.
The method involves generating and merging water waves to create complex surface patterns, such as twisting loops and swirling vortices. Laboratory experiments showed that these patterns can pull in ...