Vote for your favorite The Big Bang Theory episodes in our tournament

Submit a Correction

Thank you for your help to improve our quotes database. Fill in this form to let us know about the problem with this quote.

The Quote

Quote from Bert in the episode The Wedding Gift Wormhole

Amy: So, do you know what it is?
Bert: Of course I know what it is. It's a silicon dioxide crystal, otherwise known as quartz.
Sheldon: Are you sure?
Bert: Am I sure? Is basalt a mafic extrusive igneous rock formed by the rapid cooling of magnesium and iron-rich lava? Yeah, I'm sure.

Our Mistake
Your Notes or Comments
Human Test
  • This helps us figure out whether you are a human or a cyborg.

Submit Correction