...of the equations of general RELATIVITY
and hydrodynamics...
The Big Bang Theory Season 6, Episode 24
Einstein's RELATIVITY equations
pop out.
The Big Bang Theory Season 11, Episode 13
When Einstein came up
with special RELATIVITY...
The Big Bang Theory Season 3, Episode 14
about RELATIVITY,
was always rooted in twins.
Westworld Season 3, Episode 8
Just explaining the theory of RELATIVITY.
The Big Bang Theory Season 6, Episode 5