Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15
Here's where we derived the mass
of the dark-matter PARTICLE.
The Big Bang Theory Season 3, Episode 4
But Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15
Senior theoretical PARTICLE physicist
at CaITech, focusing on M Theory.
The Big Bang Theory Season 3, Episode 14
Professor Rothman urinated in
the PARTICLE physics wab again,
The Big Bang Theory Season 5, Episode 14