![♪ Of a radium in a lead jar...
♪ Of a radium in a lead jar...](https://content2.mcqstudy.com/ss/tbbt-12-23-00:01:56.551.jpeg)
♪ Of a RADIUM in a lead jar...
The Big Bang Theory Season 12, Episode 23
![...this is Madame Curie killing herself
by discovering radium.
...this is Madame Curie killing herself
by discovering radium.](https://content2.mcqstudy.com/ss/tbbt-6-4-00:07:16.922.jpeg)
...this is Madame Curie killing herself
by discovering RADIUM.
The Big Bang Theory Season 6, Episode 4
![bathed in the glow of their love
and the radium
bathed in the glow of their love
and the radium](https://content2.mcqstudy.com/ss/tbbt-5-16-00:09:29.452.jpeg)
bathed in the glow of their love
and the RADIUM
The Big Bang Theory Season 5, Episode 16
![♪ Six times ten to the eighth
atoms of radium ♪
♪ Six times ten to the eighth
atoms of radium ♪](https://content2.mcqstudy.com/ss/tbbt-12-23-00:01:51.067.jpeg)
♪ Six times ten to the eighth
atoms of RADIUM ♪
The Big Bang Theory Season 12, Episode 23
![♪ Of a radium in a lead jar
♪ Of a radium in a lead jar](https://content2.mcqstudy.com/ss/tbbt-12-23-00:01:49.021.jpeg)
♪ Of a RADIUM in a lead jar
The Big Bang Theory Season 12, Episode 23