Einstein's RELATIVITY equations
pop out.
The Big Bang Theory Season 11, Episode 13
The wheel was a great idea.
Relativity was a great idea.
The Big Bang Theory Season 1, Episode 7
...with general RELATIVITY
than does string theory.
The Big Bang Theory Season 2, Episode 2
about RELATIVITY,
was always rooted in twins.
Westworld Season 3, Episode 8
...of the equations of general RELATIVITY
and hydrodynamics...
The Big Bang Theory Season 6, Episode 24