Sheldon, you got him in your sights. Fire!
He's charging his PLASMA rifle.
The Big Bang Theory Season 1, Episode 7
on a PLASMA physics study.
The Big Bang Theory Season 12, Episode 20
Word around the PLASMA lab
is you built a robot?
The Big Bang Theory Season 2, Episode 12
It's asymptotically free partons
inside a quark-gluon PLASMA.
The Big Bang Theory Season 6, Episode 4
This PLASMA grenade.
The Big Bang Theory Season 1, Episode 7