
each vibration is
a different PARTICLE.
The Big Bang Theory Season 11, Episode 13

But Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15

Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15

All right, so
this PARTICLE here
The Big Bang Theory Season 5, Episode 21

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