Radiation pattern of a half-wave dipole; polar plot.
<a href="//commons.wikimedia.org/w/index.php?title=User:Shandris&amp;action=edit&amp;redlink=1" class="new" title="User:Shandris (page does not exist)">Shandris</a>
2010-03-24
<span class="int-own-work" lang="en">Own work</span>