No, he's a THEORETICAL physicist
at CalTech.
The Big Bang Theory Season 9, Episode 8
So now let's bring out THEORETICAL physicist,
Dr. Sheldon Cooper!
The Big Bang Theory Season 6, Episode 18
Theoretical physicists do not get canned.
The Big Bang Theory Season 1, Episode 4
It's very impressive.
For THEORETICAL work.
The Big Bang Theory Season 4, Episode 3
She's a neurobiologist, and
I'm a THEORETICAL physicist.
The Big Bang Theory Season 7, Episode 21