...on MOLECULAR positronium
given by Dr. Emil Farmanfarmian.
The Big Bang Theory Season 1, Episode 10
How about a MOLECULAR sieve?
The Big Bang Theory Season 2, Episode 18
Okay, this cereal
has lost all its MOLECULAR integrity.
The Big Bang Theory Season 1, Episode 7
...on MOLECULAR positronium.
The Big Bang Theory Season 1, Episode 10
Don't rush it. We may be dealing
with befoulment on a MOLECULAR level.
The Big Bang Theory Season 6, Episode 9