Radiation of completely black body
<a href="https://sk.wikipedia.org/wiki/user:helix84" class="extiw" title="sk:user:helix84">helix84</a> translated in Urdu by <a href="//commons.wikimedia.org/w/index.php?title=User:Hmfs.ind&amp;action=edit&amp;redlink=1" class="new" title="User:Hmfs.ind (page does not exist)">Hmfs.ind</a>
<a href="//commons.wikimedia.org/wiki/File:Blackbody.svg" title="File:Blackbody.svg">File:Blackbody.svg</a>