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.
Test setup used. (a) Pivot structure used to control the force/pressure of the contact between the electrode and the gelatine test piece. (b) Conductive gelatine used as a phantom head, here set in the shape of a cuboid with an embedded reference electrode. (c) Photograph of the arrangement.
