How Do Elevators Know Where To Stop

Summary

It's one of those things we never think about—until it goes wrong. How does an elevator You step into an elevator, press a button, and seconds later it stops perfectly level with the floor. Not too high. Not too low. Exactly ... Every day, we step into an elevator and put our entire spinal safety into the hands of a giant metal box that somehow knows how ... When you press floor 42, a multi-ton steel box travels up a dark vertical shaft at 20 mph—yet opens perfectly flush with the hallway ... You press a button. The elevator moves. And it stops perfectly at your floor. Every. Single. Time. But there's no driver. No one is ... This channel is for educational purposes only. English learning results vary by learner and practice time. Every day, millions of people step into You press a button, the elevator moves—and somehow stops perfectly level with the floor. This video explains counterweights, ...