LEONARD: Oh, my God,
there's a breach in the RADIATION unit.
The Big Bang Theory Season 1, Episode 11
...even though she would later die a slow,
painful death from RADIATION poisoning.
The Big Bang Theory Season 1, Episode 2
Perhaps more if that RADIATION
gave you a super brain.
The Big Bang Theory Season 11, Episode 17
If you guys prove the existence
of Unruh RADIATION...
The Big Bang Theory Season 7, Episode 2
...suggest you could find the equivalent
of Unruh RADIATION in a large body of water?
The Big Bang Theory Season 6, Episode 24