- Is it a secret?
- No, it's a nitrogen LASER.
The Big Bang Theory Season 6, Episode 5
...when you accidentally spill peach
Snapple into a helium-neon LASER.
The Big Bang Theory Season 2, Episode 6
for a pretty cool
europium-doped LASER,
The Big Bang Theory Season 12, Episode 7
in my free-electron LASER
to support high voltages.
The Big Bang Theory Season 5, Episode 23
we could use my new LASER
to cut it open.
The Big Bang Theory Season 12, Episode 14