
Physika means the science
of NATURAL things.
The Big Bang Theory Season 3, Episode 10

causal explanations of
NATURAL phenomena?
The Big Bang Theory Season 12, Episode 18

Doing it NATURAL instead.
Breaking Bad Season 2, Episode 12

There was no NATURAL light there.
Money Heist Season 3, Episode 7

Primates such as ourselves
have a NATURAL instinct...
The Big Bang Theory Season 4, Episode 19