MythBusters (2003)
0 mistakes in Zombie Special
Starring: Adam Savage, Jamie Hyneman, Kari Byron, Robert Lee
Genres: Documentary, Mystery
I'm afraid there's nothing listed for this episode. Add something here!
Scottie: Maybe it's a myth that methane is flammable.
Adam: It's not a myth. We're just idiots.
Seasickness: Kill or Cure - S3-E24
Question: Why does a separated bubble form when you drive with your tailgate up?
Join the mailing list
Separate from membership, this is to get updates about mistakes in recent releases. Addresses are not passed on to any third party, and are used solely for direct communication from this site. You can unsubscribe at any time.
Check out the mistake & trivia books, on Kindle and in paperback.
Answer: A more complex and complete answer probably isn't possible here, since we're dealing with fluid dynamics, pressure, boundary levels, etc. A simply answer would the air in the bed is kept there by the fast moving air coming off the roof of the cab. If there was no "secondary bubble" of air, you would have a vacuum in the bed. When air comes off the roof, it needs a place to touch down, which it is able to do with the top of the tailgate. The fast flowing air moving over the bed keeps the air that's already inside the bed from "escaping." However, the air in the bed is still moving and creates a vortex in the bed, which is described as a bubble. When the tailgate is down, the air coming off the roof will gather at the back of the cab and create drag.
Bishop73