Illustration of <a href="https://en.wikipedia.org/wiki/vibration" class="extiw" title="en:vibration">vibrations</a> of a <a href="https://en.wikipedia.org/wiki/drum" class="extiw" title="en:drum">drum</a>.
<a href="//commons.wikimedia.org/wiki/User:Oleg_Alexandrov" title="User:Oleg Alexandrov">Oleg Alexandrov</a>
2008-01-12 06:21
self-made with MATLAB