h a l f b a k e r yMagical moments of mediocrity.
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I have imagined a theme park, a theme park in which eveything contains magnets.
The restuarants plates are magnets with the tables having the same poles, so the plates float. More magnets keep the plates from falling off of the edge. Everything just gliiiiiiides.
The rides are levitated upon magnetic
tracks as to have the least friction and greatest speed.
The walkways have magnets imbedded in them, so people can ride on MagnetiCars, which are fun and safe. These MagnetiCars are levitated, powered, and controlled with magnets and compressed air. The hull of a swamp boat is coated in magnets, with the same pole facing inwards, as to repulse itself from the road, we could then use the fans to "drive" the car.
Also, able to be rented are MagnetiBoards, wheel-less skateboards (about the size of a kneeboard), which are levitated and can support a fully grown human .
There are hills upon which to use these MagnetiBoards, creating yet another ride.
Ahh..... What a wonderful place......
All cell phones pagers, keys, any electronics and anything with magnetic items must be left at the gate, of course.
*NOTE* Everyone seemed stuck on the car, so I may restart this idea fresh over as something like "FloatWorld" or something, not just involving magnets. - April 21, 2005
Rare Earth Magnets for Fun and Profit
http://www.dansdata.com/magnets.htm#ff
Some ferrofluid pictures [Detly, Apr 22 2005]
[link]
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I find that this idea is both attractive and repulsive in equal measures. |
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//The restuarants plates are magnets with the tables having the opposite poles, so the plates float// |
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You mean, the plates and the tables have the SAME poles. Otherwise they won't float. |
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(And I thought I hadn't learnt anything at physics class, in highschool, HA!) |
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If you can, please elaborate on the following: |
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//These MagnetiCars are levitated, powered, and controlled with magnets.// |
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Of course if you dropped your plate upside down on the table, it would stick there permanently, trapping your food. Keeping things from sticking to each other all the time would present quite a major problem, but I won't fishbone 'cos it sounds like a lot of fun. |
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Persons with pacemakers be advised - some rides may be hazardous to your health. |
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If you got to close to another car traveling the opposite direction, would you get stuck together? |
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Ha ha ha. I just got [2 fries] comment.
Very clever! |
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For the vehicle to float over a large area, the entire track it was to use would have to be the same pole of a magnet (all North, for instance, with all the south poles underneath). |
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To move the vehicle, its magnet must be repelled away from North and towards South in the direction you wish to go. However, the magnetic field is basically uniform (all north) - it's not changing smoothly from north to south as you move in any horizontal direction. Consequently, the vehicle is repelled equally in all horizontal directions (a north in front of the vehicle is repelling it, as is a north behind the vehicle, etc) and no movement results, no matter how you swivel the magnet on the vehicle. |
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Except that, of course, as you rotate the magnet to horizontal, the north and south will both be equally close to the ground, their effects will cancel each other out and gravity will take over. |
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Everone is stuck on the car. We would have to find a way to get the car to work somehow, I agree. The car is not the only part. |
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Okay, the cars are controlled using compressed air jets (like a hovercraft,sort of) and large fans, like a swamp boat. |
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[DF] you mentioned on [viola]'s idea that you plan to redo this, because everyone got stuck talking about the cars. However, the same problems affecting the cars also affect everything else - floating magnets are fundamentally unstable (will flip) without some form of control. Also, the magnetic field over a large, flat magnetic plate will tend to accelerate even a stabilised repelling magnetic pole sideways, away from the centre of the plate. Near the centre of a large area, this effect will not be particularly noticeable though. Smaller areas like restaurant tables would be very prone to firing their contents radially off the table. |
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Plus, of course, magnets do not provide infinite force. Permanent magnets will be forced to the ground rather than floating, simply because the guy trying to ride on it is too big. |
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So it might be possible, but probably only with electromagnets to give sufficient magnetic field strength, electronics to control and stabilise the device, and compressed air thrusters (as you said) not only to move things, but also to keep them in one place. |
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I know. I changed it to swamp boats. Going to change it more, later today. |
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You forgot the ferrofluid waterfall (link). |
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We have a jar of it in the lab, and I can't leave the
stuff alone. |
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Now you're getting stuck on the cars, [DF]. Read what I said. My post is not about the cars/swamp boats. It's about everything else. |
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As far as the plates go, wouldn't it be easier to
construct them from a diamagnetic material such as
bismuth or (certain types of) graphite? |
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