Machines: How They Work - Pianos, Vending Machines, and Rappels

Seizoen: 1 - Aflevering: 9 / 9 - Eerst uitgezonden: 17 maart 2016 - Episode ID: 1347975

How does a piano, a vending machines, and a rappel really work? Go inside the incredible machinery behind these everyday objects to see their extraordinary inner workings.