![or under the icy surface
of Europa?
or under the icy surface
of Europa?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
or under the icy SURFACE
of Europa?
The Big Bang Theory Season 11, Episode 10
![Then a laser will map
the reflective surface...
Then a laser will map
the reflective surface...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Then a laser will map
the reflective SURFACE...
The Big Bang Theory Season 6, Episode 5
![what do you say we get back
to surface tension of domain walls?
what do you say we get back
to surface tension of domain walls?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
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
Can you recommend a surface](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Can you recommend a SURFACE
The Big Bang Theory Season 7, Episode 18
![...as the surface of
an n-dimensional superfluid.
...as the surface of
an n-dimensional superfluid.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...as the SURFACE of
an n-dimensional superfluid.
The Big Bang Theory Season 8, Episode 23