FiDi 39 festival (Physicist's Day) at <a href="https://en.wikipedia.org/wiki/Vilnius_University" class="extiw" title="en:Vilnius University">Vilnius University</a> Faculty of Physics.
<a href="//commons.wikimedia.org/wiki/User:Andrius.v" title="User:Andrius.v">Andrius Vanagas</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>