You and Sheldon already came up
with your superfluid HELIUM model.
The Big Bang Theory Season 9, Episode 16
I'm not seeing anyone
using liquid HELIUM vortices like this.
The Big Bang Theory Season 9, Episode 16
Be even better if he swapped out
the HELIUM for xenon.
The Big Bang Theory Season 11, Episode 8
You see, instead of
using liquid HELIUM...
The Big Bang Theory Season 11, Episode 8
"Helium."
The Big Bang Theory Season 2, Episode 5