University of Chicago physicists have created a novel state of matter using nothing more than a container of loosely packed sand and a falling marble. They have found that the impacting marble produces a jet of sand grains that briefly behaves like a special type of dense fluid.
University of Chicago physicists have made careful measurements of flowing sand that can help resolve longstanding questions regarding how glasses differ from liquids at the atomic level, the scientists report in the Thursday, June 23 issue of the journal Nature.
University physicists have learned how to eliminate what scientists formerly regarded as the inevitable splashing that occurs after a liquid crashes onto a flat surface. It turns out that the removal of air eliminates the splash process.