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

I have to tell you that while I do have
a THEORETICAL understanding...
The Big Bang Theory Season 2, Episode 5

Of course not.
I'm a THEORETICAL physicist.
The Big Bang Theory Season 2, Episode 23

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

It happens to THEORETICAL
physicists all the time.
The Big Bang Theory Season 5, Episode 17