beta
I Didn't Know That: "Chair Testing"
Flash Player Upgrade Required.
You must download and install the latest version of Adobe Flash Player to view this content. Click here to download.
Coming up next in 10 seconds
More Videos
-
© National Geographic Kids
"Chair Testing"
Watch two industrial scientists, Richard Ambrose and Jonny Phillips, explain the science behind everyday products. How do manufacturers make sure that chairs won't fall apart when people sit on them? With a fake bottom!
