
His OBSERVATION of high-energy positrons
has provided the first evidence...
The Big Bang Theory Season 2, Episode 11

OK? For some OBSERVATION.
Westworld Season 2, Episode 4

True. I've had a similar OBSERVATION.
The Big Bang Theory Season 2, Episode 15

that could reconcile the lack
of OBSERVATION of supersymmetry
The Big Bang Theory Season 12, Episode 5

- Keen OBSERVATION, goodbye.
- You see where you went wrong, don't you?
The Big Bang Theory Season 1, Episode 12