How Swiss Army knives and thermometers are made
March 17th, 2012 at 4:48 pm (Engineering)
Ever wondered how a Swiss Army knife is put together? Wonder no more!
This is just one of a whole pile of fascinating “How It’s Made” videos put out by the Science Channel. Here’s another great one about how thermometers are made:
In these thermometers, they use an unspecified blue liquid (to avoid toxic mercury) that expands and contracts with temperature. The calibration process is fascinating (and surprisingly manual).
I’m already having trouble dragging myself away from this site! Enjoy!