An official website of the United States government
Here's how you know
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.
The normal displacement at the center of the silicone disk (w0) as a function of the applied frequency (100, 200 and 300âHz) and the driving voltage (Vpp=0â1 V).