
as a THEORETICAL
physicist,
The Big Bang Theory Season 7, Episode 20

She's a neurobiologist, and
I'm a THEORETICAL physicist.
The Big Bang Theory Season 7, Episode 21

No, he's a THEORETICAL physicist
at CalTech.
The Big Bang Theory Season 9, Episode 8

"The physics is THEORETICAL,
but the fun is real."
The Big Bang Theory Season 3, Episode 7

Not just for THEORETICAL physics,
but for astrophysics.
The Big Bang Theory Season 8, Episode 6