111–120 of 215 posts
Earlier quoted context omitted.
If I’m understanding what you’re saying, couldn’t that be solved with some kind of belt tensioner?
According to https://www.youtube.com/watch?v=tZ8ehplVFp4&t=636 the handrail is driven by a friction wheel that wears out over time, so its diameter gradually decreases and the handrail speed slows down (until it gets too out of sync, and the friction wheel is replaced).
Somewhat off-topic, but why are all the men in the film wearing hats? Was this some sort of dress code?
As a bonus, I can imagine myself as Clint Eastwood.
Earlier quoted context omitted.
Yeah, love that idea of progressive velocities. I ant someone to at least build a short test track like this so we can play with it. Seem to recall they were called "slidewalks" by some Sci-Fi author—probably Heinlein, eh?
so assuming inner sidewalk moving at 100 mph, next outer at 95, and each moving at 5 per less, when big muscular terrorists placed on s-100 carrying a big cardboard box filled with nails and throw it as quickly and hard as possible so that the box of nails open up over s-75 at what velocity are the nails raining down on pedestrians on s-75?
> Thomas Edison sent one of his producers, James Henry White, to the Exposition and Mr. White shot at least 16 movies
Earlier quoted context omitted.
Yeah, love that idea of progressive velocities. I ant someone to at least build a short test track like this so we can play with it. Seem to recall they were called "slidewalks" by some Sci-Fi author—probably Heinlein, eh?
so assuming inner sidewalk moving at 100 mph, next outer at 95, and each moving at 5 per less, when big muscular terrorists placed on s-100 carrying a big cardboard box filled with nails and throw it as quickly and hard as possible so that the box of nails open up over s-75 at what velocity are the nails raining down on pedestrians on s-75?
I love the kid who is hamming it up at the bottom of the frame. I've been a photographer/videographer for my entire professional career and have run into this kid many, many times. Adults exhibit this behavior too but it is usually much more moderated. This kid had to know what a camera was, which end was filming (some early film cameras appeared to be simple boxes), and wanted to make his mark on the final product.
Some guy smacks the kid with a light left hook at about 1:14.
Earlier quoted context omitted.
According to https://www.youtube.com/watch?v=tZ8ehplVFp4&t=636 the handrail is driven by a friction wheel that wears out over time, so its diameter gradually decreases and the handrail speed slows down (until it gets too out of sync, and the friction wheel is replaced).
I wonder why they can't just use a toothed belt.
I'd guess that Heinlein was aware of it and scaled it up in his imagination. The Roads must roll — they are the arteries of the nation. When they stop, everything stops. Factories idle, food rots, men starve. The nation cannot live without its Roads. A thousand feet wide, level as a floor, strip after strip moving past in ordered procession. The slow strips on the outside moved at five miles an hour; the inner ones f…
Asimov went into some detail with this premise too, in Caves of Steel iirc. I suppose he probably got it from Heinlein.