![Oh, uh, we're making
nano vacuum tubes.
Oh, uh, we're making
nano vacuum tubes.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Oh, uh, we're making
nano VACUUM tubes.
The Big Bang Theory Season 7, Episode 7
![through the cryocooler
or through the vacuum filter.
through the cryocooler
or through the vacuum filter.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
through the cryocooler
or through the VACUUM filter.
The Big Bang Theory Season 10, Episode 20
![...of the quantum vacuum has little
effect on the expansion of the universe.
...of the quantum vacuum has little
effect on the expansion of the universe.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...of the quantum VACUUM has little
effect on the expansion of the universe.
The Big Bang Theory Season 4, Episode 7
![...due to quantum vacuum fluctuation? ...due to quantum vacuum fluctuation?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...due to quantum VACUUM fluctuation?"
The Big Bang Theory Season 1, Episode 13
![All right.
He broke the vacuum cleaner.
All right.
He broke the vacuum cleaner.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
All right.
He broke the VACUUM cleaner.
The Big Bang Theory Season 8, Episode 23