
Well, I have an extremely
low center of GRAVITY.
The Big Bang Theory Season 7, Episode 11

Yeah... and the craziest part
is, because there's no GRAVITY,
The Big Bang Theory Season 5, Episode 18

Loop quantum GRAVITY
is the future of physics.
The Big Bang Theory Season 2, Episode 2

...who believes loop quantum GRAVITY
better unites quantum mechanics...
The Big Bang Theory Season 2, Episode 2

It uses powerful electromagnets to create
a force strong enough to overcome GRAVITY.
The Big Bang Theory Season 6, Episode 5