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The elevator paradox is a paradox first noted by Marvin Stern and George Gamow, physicists who had offices on different floors of a multi-story building. Gamow, who had an office near the bottom of the building noticed that the first elevator to stop at his floor was most often going down, while Stern, who had an office near the top, noticed that the first elevator to stop at his floor was ...
A paternoster in Prague Paternoster elevator in The Hague, when it was still in operation. A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping.
In addition to lanterns, most elevators have a chime to indicate if the elevator is going up or down either before or after the doors open, usually in conjunction with the lanterns lighting up. For example, one chime can indicate "up", two "down", and no chimes indicate an elevator that is 'free'. [93] [additional citation(s) needed]
The elevator is a moveable part of the horizontal stabilizer, hinged to the back of the fixed part of the horizontal tail. The elevators move up and down together. When the pilot pulls the stick backward, the elevators go up. Pushing the stick forward causes the elevators to go down. Raised elevators push down on the tail and cause the nose to ...
An elevator may be marked with a sign noting that it is specially configured for Shabbat observance. [1] There are several ways the elevator works (going up and down), stopping at every floor, stopping at alternate floors, or rising to the top floor and stopping, while going down.
Parallel (up and down escalators adjacent or nearby, often seen in perpendicular areas, metro stations and multilevel movie theaters); Multiple parallel (banks of more than one escalator going in the same direction parallel to banks going the other direction);
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The lift was opened March the 19th 1883. During the first month approximately 1,500 passengers rode the lift daily. The price was 5 öre for going up and 3 öre for going down on the lift at that time. The lift and bridge was constructed by the Belgian firm Lecoq & Comp, using a mechanism sourced from the American firm Weeks & Halsey.