Take a bunch of granular particles, put them in a container on a rigid platform and shake the system vertically. You might find heaping, convective rolls, size segregation or traveling waves. Recent experiments with several layers of particles have produced, at a critical acceleration, a sharp transition from a flat surface to standing‐wave patterns oscillating at either one‐half or one‐quarter the excitation frequency.
Topics
Standing waves
This content is only available via PDF.
© 1995 American Institute of Physics.
1995
American Institute of Physics
You do not currently have access to this content.
