{"product_id":"why-elevators-are-safer-than-edward-callenford-9798188600136","title":"Why Elevators Are Safer Than Stairs: How the Machine That Defies Gravity Became the Safest Way to Travel","description":"\u003cp\u003eStatistically, the elevator is one of the safest ways to travel ever devised, far safer than the stairs beside it. Yet many of us feel a flicker of unease as the doors close. How did a machine that dangles us in the air on a cable become so extraordinarily safe?\u003c\/p\u003e\u003cp\u003eEdward Callenford lifts the lid on the elevator: the ingenious safety brake that made skyscrapers possible, the counterweights and gearing that make lifting a full car almost effortless, the sensors and controllers that shuffle crowds through a busy tower, and the layers of redundancy that mean a snapped cable is a myth, not a menace. He also explores how elevators quietly shaped the modern city, turning the top floor from the servants' quarters into the penthouse.\u003c\/p\u003e\u003cp\u003eClear, reassuring, and full of original diagrams, this book reveals the hidden brilliance inside a machine you trust with your life every single day.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Edward Callenford\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9798188600136\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Independently Published\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 07\/23\/2026\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 130\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.53lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 10.00h x 7.00w x 0.28d","brand":"Edward Callenford","offers":[{"title":"Paperback","offer_id":50665955852543,"sku":"9798188600136","price":9.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.whiterainbookhouse.com\/products\/why-elevators-are-safer-than-edward-callenford-9798188600136","provider":"WR Book House","version":"1.0","type":"link"}