Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Orientation order parameter for live (red) and immotile (black) cells, shown for a range of velocities. Results are mirrored at the center for improved statistics. In the first panel, orientation without flow is measured by simply choosing a direction for flow.
