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.
Pixel x-ray signal sensitivity measured in radiographic mode and the corresponding WEFF obtained from blocks of hundreds tow-free regions of the prototypes, presented in the form of a bar chart. For a given array, the WEFF and the corresponding sensitivity are indicated by the top of the darker and lighter shaded portions of the bar, corresponding to the left and right scales, respectively.
