Spherical Tungster Carbide under Scanning Electron Microscope, magnification x950, Material Laboratory
<a href="//commons.wikimedia.org/w/index.php?title=User:GabaPy&amp;action=edit&amp;redlink=1" class="new" title="User:GabaPy (page does not exist)">Gabriela P.</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>