
He's an EXPERIMENTAL physicist.
The Big Bang Theory Season 6, Episode 5

A small payload support structure for
a European science EXPERIMENTAL package...
The Big Bang Theory Season 1, Episode 12

what to do with a washed-up
EXPERIMENTAL physicist...
The Big Bang Theory Season 5, Episode 10

So if you are considering
going into EXPERIMENTAL physics...
The Big Bang Theory Season 2, Episode 6

Leonard grew up to be
an EXPERIMENTAL physicist.
The Big Bang Theory Season 1, Episode 16