Agents of S.H.I.E.L.D.2013

Leo Fitz:
Gravitonium. It's an extremely rare high-atomic numbered element.

Jemma Simmons:
That powers the device. It's so extremely rare that most people didn't believe it existed, much less the theory that an isolated positive charge...

Leo Fitz:
...Would turn the flow from isotropic...

Skye:
[Interrupts] Guys, high-school dropout here. How does the device work again?

Jemma Simmons:
Well, Gravitonium distorts gravity fields within itself, causing an undulating, amorphous shape.

Leo Fitz:
Which causes these

[Points to the screen]

Leo Fitz:
um, wiggly bits here, but when an electric current is applied, the Gravitonium solidifies. And those gravity fields erupt, randomly changing the rules of gravity around it. Well, so, now you can imagine what would happen to a big rig at 100 kilometers per hour.

[Slight pause]

Leo Fitz:
Or, uh, well, you could just remember, 'cause we saw it already, didn't we?