principle of Wu experiment 1956 to detect parity violation in nuclear beta decay
<a href="//commons.wikimedia.org/w/index.php?title=User:Bleckneuhaus&amp;action=edit&amp;redlink=1" class="new" title="User:Bleckneuhaus (page does not exist)">Bleckneuhaus</a>
2012-08-08
<span class="int-own-work" lang="en">Own work</span>