"어떻게 이렇게 빠를 수가 있지?" 탈 때마다 신기한 초고속 엘리베이터🛗 짧은 시간에 고층빌딩 돌파하는 엘리베이터에 숨겨진 비밀 #과학 #EBS지식

🗝️Intellectual +: https://bit.ly/EBSKnowledge The Truth or False of Elevator Crash Scenes in Movies! Most elevators in movies are places of fear rather than comfort. Could it be said that the ropes in movies easily snap and the elevators fall? Does that mean the elevators we ride in real life are the same? NO! Absolutely not!! Elevators actually work on the same principle as drawing water from a well with a bucket. They utilize the principle of a fixed pulley. A wire rope is suspended from a traction machine, which acts as a fixed pulley. The elevator car (car) sits on one end of the rope, and a counterweight is attached to the other. The traction machine pulls the wire rope, moving it up and down. While the principle itself is simple, elevators are actually high-tech devices comprised of tens of thousands of components. And, above all, safety is paramount in elevators, which are equipped with safety devices more powerful than even a steel robot with iron arms and legs. So, you don't have to worry about falling. 📺Broadcast Information 📌 Program: DocuPrime Wonderful Science - Science, Riding the Elevator 📌 Air Date: October 28, 2010 #EBS #Knowledge #EBSKnowledge #Science #DocuPrime #WonderfulScience #ScienceDocumentary #ScienceDocumentary #Elevator #UltraHighSpeedElevator #Skyscraper #Elevator