There Could Be 4D Light Constantly Pouring Through Us

[Jay]

Think about. Look at Fred.

He can never see light that originates from outside his plane. The lightbulb in Bob's room for example, may shine light onto Fred's world. A lot of this light goes right through Fred. Maybe it Bob's wall and bounces back out, so Fred's insides are not only visible but completely illuminated to Bob.

However, there are light particles that fall directly onto the 2D surface of Fred's world. But, for Fred to see them, they would have to bounce off the object into his eyes. However, they come off at an angle equal to that they came into his world with. In other words, they actually come into his world for a brief moment and then bounce right back out. Every part of his world is completely illuminated with 3D light that he doesn't even notice!

The same may be happening to Bob. Every area in his world may be illuminated with 4D light that he can't notice. But his insides and the insides of everthing around him are completely visible AND bright to Emily. Areas that are dark to Bob are constantly being struck by 4D photons. This gives a crazy perspective on spying on lower dimensions.

[alkaline]

that's exactly how i picture it.

[Keiji]

And how I see it as well.

[RQ]

Not true...

Although light would be shining in bob's 3d universe, it would never even incorporate into fred's 2d universe. This is simply because 3d could not exist within 2d and therefore fred wouldn't exist to bob, neither to the light that is shining. If Fred were to exist in Bob's world, he would have to have thickness and furthermore bob would never be able to recognize fred as part of anything (or even nothing) because if we were to look at Fred from his non-existent 3rd dimension he wouldn't exist. Since Fred lives in an a slice of bob's world that is infinitesily small he cannot exist (x/infinity=0).

[Keiji]

Er... but.......

*scratches head*

You are totally right. Bob would just see straight through Fred's two-dimensional atoms. There might be millions of planiverses out there, possibly infinite numbers of them in our house!

Similarly, there could be infinite realm...i...verses (what is the correct word for this?), possibly right next to each other!

[Jay]

That's wrong RQ. It's not impossible for a 2d plane to exist within a 3d realm. Do not confuse infintesimally thin in the 3rd spacial dimension with infintesimally small.

Sure it would be hard for Bob to see Fred straight on. But that's only because he's not used to looking at things as lines, and also because the lines may be hard to discern from the rest of his planar vision.

But looking from the z direction straight at Fred, Bob could easily see him.

Interactions between the dimensions may get a little funky, but certainly not impossible.

And bobxp, I don't think Fred would be able to see through Fred's atoms.

[RQ]

Well for Bob to be able to see Fred, there would have to be light reflected off of Fred's 2D world, but since Fred has no z dimension, light wouldn't have a surface to hit off of.

[Jay]

Just because it has no z dimension doesn't mean that it can't interact with the third dimension. Think of the 3d photon-2d atom interaction like a ball hitting the edge of a very thin sheet of metal, or something.

[alkaline]

It could be like this: Light within planespace moves planar atoms up/down and forward/backward. The atoms are disks, and the planar light hits its edge straight on, then bounces off. Realmic like strikes the planar atom at some angle, hits the atom within its inside, bends the "rubbery" planespace, then bounces back. The light never "enters" planespace. If the light hits planespace at a different location where there isn't an atom, then it just passes through. Thus, realmic light acts on the bionian objects without affecting them perceptibly within planespace. We would need our own light source to see the objects in planespace, and we wouldn't know what their internal 2d light was doing. We would have no idea how dark or bright anything within planespace was. If we did, we would be intercepting their 2d light, and to them their 2d light would be inexplicably draining into nothing. The only way we could discover a planespace would be to have it backlit.

[RQ]

Jay, a very thin piece of anything isn't gonna cut it. It has to have 0 z dimension.