in the Earth's
SURFACE.
The Big Bang Theory Season 7, Episode 3
If there is life beneath
the SURFACE of these planets,
The Big Bang Theory Season 11, Episode 10
Then a laser will map
the reflective SURFACE...
The Big Bang Theory Season 6, Episode 5
...with silicone RTV
to provide a better mounting SURFACE?
The Big Bang Theory Season 2, Episode 18
...given the SURFACE area of this car
is about 60,000 square centimeters...
The Big Bang Theory Season 8, Episode 19