Like HowStuffWorks on Facebook!

Unchained Reaction: Water Wheelin

Team NAC, consisting of special-effects and prop animation experts, test the water wheel they built for their fire-and-ice-themed chain-reaction machine.


Most Watched in Engineering

Most Watched in Engineering
1:00

Sons of Guns: Kris's Verdict

Most Watched in Engineering
1:07

Sons of Guns: A Father's Warning

Most Watched in Engineering
1:29

Ragin Cajuns: Shrimp Jackpot

Most Watched in Engineering
2:32

Sons of Guns: Will Gives A Blessing

Most Watched in Engineering
2:13

Sons of Guns: Steph's Garter Holster

Most Watched in Engineering
1:59

Sons of Guns: Vince's Winchester Treat

Most Watched in Engineering
1:57

Sons of Guns: Hogzilla to Godzilla

Most Watched in Engineering
2:11

Sons of Guns: Vince Clears Out

Most Watched in Engineering
1:49

American Guns: 007 Car

Most Watched in Engineering
1:19

Sons of Guns: Custom BAR Build

Most Watched in Engineering
1:32

Sons of Guns: Vince Blows A Gasket

Most Watched in Engineering
1:18

Sons of Guns: Kris Pops the Question


Recent Videos in Engineering

Recent Videos in Engineering
2:24

Towing the Space Shuttle

Recent Videos in Engineering
1:48

Sons of Guns: Jesse James Lets Loose

Recent Videos in Engineering
2:12

Sons of Guns: Jesse James Surprise

Recent Videos in Engineering
1:13

Sons of Guns: Master Welder

Recent Videos in Engineering
1:19

Sons of Guns: Custom BAR Build

Recent Videos in Engineering
1:34

Sons of Guns: First Submachine Gun

Recent Videos in Engineering
2:02

Sons of Guns: Jesse Opens Fire

Recent Videos in Engineering
1:50

Bering Sea Gold: Dredger Funnies

Recent Videos in Engineering
2:08

Bering Sea Gold: Don't Call Me A Thief

Recent Videos in Engineering
2:29

Bering Sea Gold: What Is Gold?

Recent Videos in Engineering
1:49

Bering Sea Gold: Zeke Drops A Bombshell

Recent Videos in Engineering
1:03

Bering Sea Gold: Cosmic Gold Origins