All right, so
this PARTICLE here
The Big Bang Theory Season 5, Episode 21
inventing a new
dark matter PARTICLE
The Big Bang Theory Season 11, Episode 13
"Higgs boson PARTICLE."
How could you not get that?
The Big Bang Theory Season 3, Episode 13
Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15
each vibration is
a different PARTICLE.
The Big Bang Theory Season 11, Episode 13