line art drawing showing amplitude.
<ul><li>derivative work: <a href="//commons.wikimedia.org/wiki/User:McSush" title="User:McSush">McSush</a> (<a href="//commons.wikimedia.org/wiki/User_talk:McSush" title="User talk:McSush"><span class="signature-talk">talk</span></a>)</li>
<li><a href="//commons.wikimedia.org/wiki/File:Amplitude_(PSF).png" title="File:Amplitude (PSF).png">Amplitude_(PSF).png</a>: Pearson Scott Foresman</li></ul>
2008-09-22 23:28
<ul><li><a href="//commons.wikimedia.org/wiki/File:Amplitude_(PSF).png" title="File:Amplitude (PSF).png">Amplitude_(PSF).png</a></li></ul>