
Here, we have a highly gifted researcher
in the field of PARTICLE physics...
The Big Bang Theory Season 3, Episode 15

Professor Rothman urinated in
the PARTICLE physics wab again,
The Big Bang Theory Season 5, Episode 14

You'd be surprised how many
PARTICLE physicists have a whimsical side.
The Big Bang Theory Season 2, Episode 13

Here's where we derived the mass
of the dark-matter PARTICLE.
The Big Bang Theory Season 3, Episode 4

A sigma PARTICLE.
The Big Bang Theory Season 1, Episode 13