
Yeah, well, it's just some
QUANTUM mechanics...
The Big Bang Theory Season 1, Episode 1

...of the Aharonov-Bohm
QUANTUM interference effect.
The Big Bang Theory Season 3, Episode 10

Sheldon, Howard, and I are working with
the government on our QUANTUM gyroscope.
The Big Bang Theory Season 10, Episode 11

Here are some topics that interest me:
QUANTUM mechanics, trains, flags...
The Big Bang Theory Season 8, Episode 21