title: Surface films compacted by moving water: demarcation lines reveal film edges.
abstract: When water flows under the edge of a surface film the large viscous shear stress at the edge prevents the film from spreading and raises a ridge on the water surface. Near the top of its downstream flank the ridge has an abrupt change in curvature that we see as a line on the water.
authors.forename: C W
authors.initials: CW
authors.lastname: McCutchen