Laser treatment of steel 15Kh13MF in transparent condensed medium (magnification - x1K)
<a href="//commons.wikimedia.org/w/index.php?title=User:Vitterok&amp;action=edit&amp;redlink=1" class="new" title="User:Vitterok (page does not exist)">Vitterok</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>