![A sigma particle.
A sigma particle.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
A sigma PARTICLE.
The Big Bang Theory Season 1, Episode 13
![Professor Rothman urinated in
the particle physics wab again,
Professor Rothman urinated in
the particle physics wab again,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Professor Rothman urinated in
the PARTICLE physics wab again,
The Big Bang Theory Season 5, Episode 14
![...of a subatomic particle
called the Higgs boson.
...of a subatomic particle
called the Higgs boson.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...of a subatomic PARTICLE
called the Higgs boson.
The Big Bang Theory Season 6, Episode 3
![Penny has no interest
in subatomic particle research.
Penny has no interest
in subatomic particle research.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15
![](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
"Higgs boson PARTICLE."
How could you not get that?
The Big Bang Theory Season 3, Episode 13