![of virtual particles
in a vacuum,
of virtual particles
in a vacuum,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
of virtual particles
in a VACUUM,
The Big Bang Theory Season 5, Episode 23
![He's working on a paper
about nano vacuum tubes,
He's working on a paper
about nano vacuum tubes,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
He's working on a paper
about nano VACUUM tubes,
The Big Bang Theory Season 7, 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
![or vacuum cleaner salesman,
or bootblack.
or vacuum cleaner salesman,
or bootblack.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
or VACUUM cleaner salesman,
or bootblack.
The Big Bang Theory Season 5, Episode 6
![But I am ready to be helpful.
In fact, gonna go vacuum.
But I am ready to be helpful.
In fact, gonna go vacuum.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
But I am ready to be helpful.
In fact, gonna go VACUUM.
The Big Bang Theory Season 10, Episode 10