
...she's unjustifiably arrogant
about loop quantum GRAVITY...
The Big Bang Theory Season 2, Episode 2

Unless you have Gravity
on Blu-ray under that skirt,
The Big Bang Theory Season 7, Episode 21

I don't know. In space you couldn't even
toss me a pen, and that was in zero GRAVITY.
The Big Bang Theory Season 8, Episode 3

The idea that you might be able
to incorporate GRAVITY...
The Big Bang Theory Season 2, Episode 6

How does this GRAVITY wave
breakthrough
The Big Bang Theory Season 7, Episode 20