...the Copenhagen INTERPRETATION of quantum
physics, he proposed an experiment.
The Big Bang Theory Season 1, Episode 17
You believe in the many worlds
INTERPRETATION, so I'll say that.
The Big Bang Theory Season 8, Episode 2
in the Copenhagen INTERPRETATION.
The Big Bang Theory Season 10, Episode 19
An alternate and less likely INTERPRETATION
is that you could manufacture one.
The Big Bang Theory Season 1, Episode 5
Every INTERPRETATION gives the same answer
to every measurement. They're all correct.
The Big Bang Theory Season 8, Episode 2