4D water tank

Ideas about how a world with more than three spatial dimensions would work - what laws of physics would be needed, how things would be built, how people would do things and so on.

4D water tank

Postby gonegahgah » Fri May 11, 2012 12:47 pm

Older water tanks were generally cylinders. So it's not hard to imagine 4D water tanks following similar guidelines.
If you cut our 3D water tank into vertical slices and take each slice and rotate it 360deg of sideways leaving one existing point as the front then each 4D slice will generate a sphere.
So you'll have your metal spheres linked internally to form the base.
Then you'll have a vertical stacked column of internally linked spheres formed from the 3 sideways dimensions of 4D water with a metal casing.
Then you'll have a vertical stacked column of spheres of 4D air in a metal casing.
Then you'd have the metal spheres lined internally to form the roof.
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Re: 4D water tank

Postby gonegahgah » Sun May 13, 2012 2:08 am

The tap from the tank needs to connect at one point which we'll consider the front point.
The tube from tank to tap is again a cylinder like arrangement that this time travels forward and then turns up to the tap assembly.
Again you could think of it as slices into flat circles that rotated to create the 4D slices but we are crossing our dimensions as we do this.

It's like for a 2Der where an empty circle to them is impenetrable to water whereas for us water can flow through an empty circle.
So our pipes become the 2Der circles stretched sideways.
A 4Ders pipes become the 2Der circles stretched into all the sideways giving a series of spheres.
So our pipes are a prism of circles and 4Der's pipes are a prism of spheres.
Each sphere of the prism is connected to the previous and next spheres in the pipe by their insides.

So their pipes are not too much different to ours.
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Re: 4D water tank

Postby gonegahgah » Sun May 13, 2012 2:14 am

Getting a true visual of this will always be difficult.
A 2Der would think of a 3D pipe as a series of curved lines that go somewhere and that are connected by their insides somehow...
whereas we think of a 3D pipe as a series of connected circles.
So just as we think of a 4D pipes as a series of internally connected spheres; a 4Der will not think of it that way at all.
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Re: 4D water tank

Postby gonegahgah » Sun May 13, 2012 10:49 pm

The way our old taps worked was to screw down a washer onto the pipe exit hole. So basically putting a lid on the hole.
This is basically just a short cylinder.

I think the same principle can apply to 4D taps but instead of topping with a cylinder of circle slices you would top with a cylinder of sphere slices.

Our old taps also used a screw thread to make the turning easier and more precise.

Again I think the same principle can apply to 4D taps.
The main thing is that you want to screw downwards to stop the upwards flow of water.
So the thread will still encircle and follow the one direction: down.

A 4D thread could be conjured by taking each of the 'V' sections of the threads and converting them to cones.
Via this shape they should hopefully fulfill the same purpose as our threads that have only 2 directions of sidedness rather than the 3 directions of 4D sidedness.

Does that sound okay?
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Re: 4D water tank

Postby quickfur » Wed May 16, 2012 2:10 pm

The shapes you describe are just spherical cylinders (spherinders). You're right that a 4D being does not see them as a stack of spheres; a 4D being sees them as tubes capped with spherical lids.

Garden hoses would naturally have the same shape as well. So would wires. In 4D there's the additional advantage that wires will never get tangled in such a way that simply pulling them won't get them apart. That's yet another reason I love 4D: no more hairy mess at the back of my desk where all the computer cables are; in 4D you just pull at a cable and it will come loose no matter how entangled it was. Whereas in 3D you have to unknot them meticulously.
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