What's a tesseract exactly? does it exist?

Question

What's a tesseract exactly? does it exist?

Answer 1

a tesseract can display a sort of shadow of what the 4th dimesnion would or might look like...a cube nested in a cube kin to some kind of infinite right angular regress.

Answer 2

A tesseract is a 3 dimensional representation of the shadow of a simple 4 dimensional object ( a hyper cube,  call it a 4D  cube).   The 4D object would cast a 3D shadow .

This is like a 3D cube projecting a shadow onto a 2d plane like a sheet of paper.   If you trace the outline of this shadow you would get a parallelogram.    

Edit:

Check out Carl Sagan's video on the subject

A tesseract 3d model could be constructed in our 3d existence but this wouldn't create a 4d object.  The same is true if you sketch a 2D parallelogram on a sheet of paper, doing so doesn't create a 3d cube.

Answer 3

four - dimensional cube, or any tesseract:

Hypercube. It vibrates dimensionally in and out of space-time continuum. This is DUE to vibration, which is wholly dimensional in transitions.

3D dimensional object...cube shape. Vibrate it via magnetism...fast enough that it starts to appear like it's phasing in and out.

It's through vibration that you will be able to create it.

Vibration is like working through the 4th dimension, since it will take time to make the object to oscillate back and forth.

The higher the vibration, the more the 3D tesseract will sever off from local physics and voila, you have a full blown tesseract. Yet, trying to make it vibrate to the great rate of vibration is not going to an easy feat.

Is it possible? Maybe. It's the vibration rate that would be the hardest to do. You would need something else vibrating high enough to transfer this potential to the tesseract to get it going.

Does it exist? I don't think so...as far as practical experimentation. There are however, other similar things which have been done. The shape is not a cube, but a cone. The cone(s) open a dimensional gateway through vibration.

Answer 4

A tesseract is to a cube as a cube is to a square. Since it's a four-dimensional geometric "solid," it can't exist in our three-dimensional world. But that doesn't mean we can't make all sorts of calculations as to its properties. For example, given the length of a side of a tesseract, we can calculate its four-dimensional "volume." So in the sense that it can be manipulated, it exists.

Answer 5

It is a theoretical 4 dimensional cube. It does not formally exist in our universe, as far as we really know. However, the theory of multiple universes could have 4 to 19 dimensions.

Answer 6

A tesseract is a four dimensional cube, also sometimes called a hyper cube.  Below is a link to what one would look like in 3 dimensions.  However, realize that picture is not quite it in the same way that drawing a 3d representation of a cube on a piece of paper limits it to two dimensions and is not the same as the actual cube.

For four dimensions work your way up from the beginning.

-  1 dimension = a line

-  2 dimension = a line at a right angle to the line in one dimension (denoting a plane...like a sheet of paper)

-  3 dimensions = a line at a right angle to the above two dimensions (denoting height above the plane)

-  4 dimensions = a line at a right angle to the above three (if you try you cannot manage it here in our 3d space and your brain breaks trying to visualize it ;-) )

Do they exist?  Well, we do not know if there are actually spatial dimension beyond the three we live in.  Some theories (like String Theory) posit higher spatial dimensions but while useful for their math no one can say for certain if they exist.

Note if there were higher spatial dimensions and someone plopped a tesseract in front of you would not recognize it as such since we can only perceive three dimensions.

Answer 7

Read "A Wrinkle In Time"

Answer 8

read "And He Built a Crooked House" by Heinlein.