On my 12th birthday,
I really wanted a titanium CENTRIFUGE...
The Big Bang Theory Season 1, Episode 16
I got a look at the CENTRIFUGE
The Big Bang Theory Season 5, Episode 18
Instead of a titanium CENTRIFUGE,
my parents bought me...
The Big Bang Theory Season 1, Episode 16
They're training dogs
to operate the CENTRIFUGE...
The Big Bang Theory Season 1, Episode 11
...for when they need dogs to operate
the CENTRIFUGE for blind scientists.
The Big Bang Theory Season 1, Episode 11