This video from Steve Mould on YouTube explains something most of us have probably taken for granted and never really thought too hard about before – how the gas pump knows how to shut itself off when the tank is full. He cuts a pump nozzle in half to make the investigation a lot more fun (and easy to understand). Check out the full video here!
Gas or petrol pump nozzles turn off automatically when your tank is full. The way it works is really clever and uses the venturi effect.
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