![- Is it a secret?
- No, it's a nitrogen laser.
- Is it a secret?
- No, it's a nitrogen laser.](https://content2.mcqstudy.com/ss/tbbt-6-5-00:06:33.725.jpeg)
- Is it a secret?
- No, it's a NITROGEN laser.
The Big Bang Theory Season 6, Episode 5
![WALT:
Nitrogen bonds to oxygen,
which in turn...
WALT:
Nitrogen bonds to oxygen,
which in turn...](https://content2.mcqstudy.com/ss/bb-2-7-00:03:49.604.jpeg)
WALT:
Nitrogen bonds to oxygen,
which in turn...
Breaking Bad Season 2, Episode 7
![nitrogen--
nitrogen--](https://content2.mcqstudy.com/ss/tbbt-7-3-00:12:53.494.jpeg)
NITROGEN--
The Big Bang Theory Season 7, Episode 3
![Careful, Leonard. Liquid nitrogen,
320 degrees below zero.
Careful, Leonard. Liquid nitrogen,
320 degrees below zero.](https://content2.mcqstudy.com/ss/tbbt-1-5-00:15:44.817.jpeg)
Careful, Leonard. Liquid NITROGEN,
320 degrees below zero.
The Big Bang Theory Season 1, Episode 5