The Big Bang Theory, Season 7

Sheldon:
This is the very copy of the Handbook of Chemistry and Physics in which I looked up the reaction rates of mendelevium and.. .

Amy:
And what?

Sheldon:
No. No, no, no, no.

Amy:
What's wrong?

Sheldon:
I've made a horrible mistake.

Amy:
What are you talking about?

Sheldon:
This table. It's in square centimeters. I read it in square meters. Do you know what that means?

Amy:
That Americans can't handle the metric system?

Sheldon:
Amy, I was off by a factor of ten thousand.

Amy:
But the Chinese team found the element.

Sheldon:
Well they shouldn't have, my calculations were wrong. There must be some resonance between the elements I didn't know about.

Amy:
Well, you just got lucky?

Sheldon:
Sheldon Cooper does not get lucky!

Amy:
You and me both, brother. It doesn't matter. The element was found because of you and that's ground breaking.

Sheldon:
What matters is the greatest scientific achievement of my life is based on a blunder. I'm not a genius. I'm a fraud.