This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Amanda Tinnin, from the St. Louis Science ...

On the rise. Signs of convection are seen in the motion of hot gas under the influence of a gravity-like acoustic force in a spherical glass container. The images were recorded 15, 40, and 140 ...

Sound is usually treated as the most familiar of physical phenomena, the background noise of daily life rather than a frontier of fundamental physics. Yet in laboratories around the world, carefully ...