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

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

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

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

Hey, do you wanna slip over
to the RADIATION lab...
The Big Bang Theory Season 1, Episode 5