How Does a Gas Pump Know When to Stop Pumping? If you’ve ever put gas in a car, you’ve probably noticed how the gas pump shuts off when your tank is full. But how does it know to do that? Well it is called black magic. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Do We Have Left or Right Brain Personalities? Which Life Form Really Dominates Earth? Scientists Impaled Space Junk With a Harpoon Inside the RFID Stickers from a Chinese Cashier-less Store Here Are Out-Of-This-World Translucent Creatures Captured On Video Is Discovering Global Warming Our Greatest Scientific Achievement?