
cosmic background RADIATION
from the singularity.
The Big Bang Theory Season 12, Episode 13

...and shower in the RADIATION lab
until I'm finished with my experiment.
The Big Bang Theory Season 2, Episode 5

...suggest you could find the equivalent
of Unruh RADIATION in a large body of water?
The Big Bang Theory Season 6, Episode 24

Oh, I'm in a RADIATION suit.
The Big Bang Theory Season 1, Episode 11

LEONARD: Oh, my God,
there's a breach in the RADIATION unit.
The Big Bang Theory Season 1, Episode 11