Meeting with my fellows in Steampunk Pub "Pascal"

I and several guys with whom I was studying at the university (not only studying, as you can understand ))) for 5 years, decided to have some beer. We haven't seen each other for a year and that day "X" came...
Our specialization at the university was "applied physics" that's why we decided to visit Steampunk Pub "Pascal".
We were talking hours and hours. Tasty food in the pub was called by various physical terminology like: quark, nonlinear disassembly, refraction etc. interesting interior and my fellows. Everything what you need for a nice evening.

After we received a bill in very extraordinary mechanism. You need to find out how to open it and pay...
Thanks fellows for a nice evening!!!
P.S.: My steemithians organize such meeting as often as possible, it's always very fun!