Or on movies going at very low speed
207027
This effect is called aliasing.  It happens whenever the sample rate falls below twice the rate of rotation of the tires.  Imagine a tire with a marker on the top (at rest) and start spinning it 1 time a second. Also imagine you are taking pictures of it every 3/4 of a second.  The first picture, the mark will appear at the 3/4 position around.  The second picture, the mark will apear at the 1/2 position, then the 1/4, and so on.  When you play them back, the tire will appear to spinning backwards.
98650
You have answered your question.\n Human eye can comprehend 10 images per second. More than that one cannot comprehend.\n\nTherfore, if film speed is 10 frames per second, every one can count the no of frames on seeing cinema. THE ILLUSION OF CONTINUITY will be lost and will only view a slideshow and not a motion picture.\n\nIf the flasing  rate is fast the flicker is not observed and the flashes appear continuous.\n\nIn earlier films , the speed used was 16 frames per second to obtain this illusion.\nIn these films one can perceive the lack of smoothness. \n\nThese effects are very much reduced  when 24 frames per second is used.\n\nIf we move a glowing match stick to and fro slowly we can follow the movement. If it is done fast  in a circular  motion we can perceive only a circle of light.
52695
a. it is not the speed you "must" go because it is a maximum safe limit, you can easily go 50 if the limit is 55.\nb. gives the highest speed you "should" go.  not "can" go because you can easily o faster that the speed limit but you should't.\nc. it is not there to say "hey go less than this or get a ticket." it is there to show you what the safest speed would be.
329291
It's 220mph, near enough, so you're looking at perhaps a bullet, or a jet. It might be worth dropping it to 49 m/s (110mph) or even 24.5 m/s (55mph) to bring it within the range of a sports car or ordinary motor.
172909
Its when the mobile library goes round a corner too fast
508083
If you are fat and sweaty, approximately 0 mph!
595212
at either of the poles. The least distance to travel
662294
The movie is based on what is really happening, but speeded way way up. What are you gonna do??
307380
How 'bout a movie where a simple task needs to be done and then obstacles on the way get more and more outrageous. And somehow in the end it works out, though the rewards were not substantial. You know like mailing in a light bill or something.
181870
Yes there is, however it is very weak.  only able to move small objects.  It isn't like the movies.
609735
air/vacuum pressure required to make a train filled with people travel at 1200 mph would be ridiculous.  your best bet, I'd say, is probably magnetic field.  you also have to make sure the system is pretty much foolproof, too - because a malfunction at 1200 mph = hundreds / thousands dead and a front-page headliner.
290677
Excellent question!\n\nBecause film is composed of 25 frames per second the much-faster revolution of the holes in the wheel rim gets out of phase.
5121
We've gotten light to move pretty quickly, but physical objects are the problem.
403486
63 mph in a 30 zone !!!!!!!!!!!!! are you some kind of idiot, i hope you get a ban as you deserve one, at over 60 mph you could have killed someone, if a child had steped out in front of you there is no way you would have been able to stop. Speed cameras are there to stop people like you !!!!!!!!!!!!
94114
It may slow it down, but thats about it.
238805
maybe the sound system play a lil bit fast then the they shoot the video..something like that..i've been watch that kind of movie..it annoys me too..
575927
Just be very careful do it slow