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Why do you need a differential gear? Who invented it and how does it work? In this video, we use fischertechnik models to show how differential gears work and their various applications - and show how they can be used to construct compact gear ratios. (Author: Dirk Fox, Camera/Editing: Magnus Fox, Intro/Outro: Bored Boy - Cosmic Boy) https://www.technika.de #differential #gear #technology #fischertechnik #mint #education