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.
Schematic depicting a simple, non-periodic network in which pulling the vertical filament in the axial direction results in a contraction in the transverse direction. In this case, the filament transmits forces along its own direction and, through its connections to the rest of the network, in transversal directions as well.
