
What about loop quantum GRAVITY?
The Big Bang Theory Season 7, Episode 20

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

- I wonder what he's doing this very second.
- Conducting experiments in zero GRAVITY.
The Big Bang Theory Season 6, Episode 1

I got to experience
zero GRAVITY.
The Big Bang Theory Season 5, Episode 18

GRAVITY wave discovery,
the more excited I get.
The Big Bang Theory Season 7, Episode 20