![...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
![in the Earth's
surface.
in the Earth's
surface.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
in the Earth's
SURFACE.
The Big Bang Theory Season 7, Episode 3
![that's just a doodle of
a hyperelliptic Riemann surface.
that's just a doodle of
a hyperelliptic Riemann surface.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
that's just a doodle of
a hyperelliptic Riemann SURFACE.
The Big Bang Theory Season 7, Episode 20
![...with silicone RTV
to provide a better mounting surface?
...with silicone RTV
to provide a better mounting surface?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...with silicone RTV
to provide a better mounting SURFACE?
The Big Bang Theory Season 2, Episode 18
![If there is life beneath
the surface of these planets,
If there is life beneath
the surface of these planets,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
If there is life beneath
the SURFACE of these planets,
The Big Bang Theory Season 11, Episode 10