stephen w morris: fully segregated bands
stephen w morris: segregated sand in a tube
stephen w morris: long view of the tube in real time
stephen w morris: fully segregated sand in a rotating tube
stephen w morris: long view time lapse
stephen w morris: axial segregation in a rotating tube
stephen w morris: The tube after a few minutes
stephen w morris: sharp bands
stephen w morris: a sharp band and a diffuse band
stephen w morris: time lapse of segregation bands appearing