
or under the icy SURFACE
of Europa?
The Big Bang Theory Season 11, Episode 10

that's just a doodle of
a hyperelliptic Riemann SURFACE.
The Big Bang Theory Season 7, Episode 20

what do you say we get back
to SURFACE tension of domain walls?
The Big Bang Theory Season 9, Episode 10

Can you recommend a SURFACE
The Big Bang Theory Season 7, Episode 18

...with silicone RTV
to provide a better mounting SURFACE?
The Big Bang Theory Season 2, Episode 18