4D, meaning the common 4 dimensions, is a concept in mathematics. It has been studied by mathematicians and philosophers since the 18th century. Mathematicians who studied four-dimension space in the 19th century include Möbius, Schläfi, Bernhard Riemann, and Charles Howard Hinton.
The fourth dimension (4D) is currently defined as a hypothetical construct since we live in the third dimension and must predict what the extra-spatial fourth dimension actually consists of. But generally, the 4D space is seen as an extension of the 3D space, providing further ways that objects can move.
A naturally-occurring example of a 4D structure is the pinecone. Pinecones are covered with woody scales. The underside of each scale is made up of long, parallel, thick-walled cells which get longer when they get wet, and shorten when dry.
Thankfully, there are no 4D creatures inhabiting our Universe, as they would appear indistinguishable from physics-defying, godlike entities. But what if instead of us being higher-dimensional creatures in our Universe, the Universe itself had more dimensions that it has right now?
Unfortunately, no. You can, however, get a glimpse of the fourth dimension through an optical illusion called the Necker cube (labeled A in the figure below). There are two ways to interpret this shape: as a box oriented slightly left and down (B), or as its mirror image (C).
We are actually four dimensional. We are comprised of 4 distinct but integrated parts. Three of which are related to our physical experience – the body, heart and mind. The fourth is the dimension of consciousness or spirit.
A 4D VR experience transforms the physical world into a virtual one by seamlessly integrating the two to create an immersive experience. This fusion of physical sensations and virtual reality offers an elevated experience that even 3D virtual reality cannot match.
Time is the same, everywhere. Alas, absolute time fell apart in the wake of Albert Einstein's theories of relativity. They revealed that space and time are unified as four-dimensional space-time, a medium that is warped by both gravity and motion so that no two observers can ever agree on what happened when.
To summarize our understanding of the fourth dimension, objects in 4D vary in value by length, width, height, and strength. All of these dimensional measures extend in a direction perpendicular to the previous three.
The other possible explanation is that the process of visualization takes up a three-dimensional space in our actual brain, preventing us from “tuning a dimensionality knob” on our imaginations.
4D is the newer technology and provides a more detailed and realistic view that many expecting parents prefer.
The metaverse is a digital and virtual reality. It is not a specific place or a website, but a concept of a “4D-Internet”.
How can we visualize the 4-dimensional hypercube? To use stereographic projection, we radially project the edges of a 3D cube (left of the image below) to the surface of a sphere to form a “beach ball cube” (right). The faces of the cube radially projected onto the sphere.
Physics > Thinking in Three Dimensions. We live in a world of three dimensions. We move through space , either left or right, forward or backward, up or down. Everything around us, from the houses we live in to the objects we use in everyday life, has three dimensions: height, length, and width.
In a 4D world, our eyes can still, only perceive 2D and by combining multiple images, we will still only achieve 3D dimensions. We simply cannot perceive 4D.
The Bible also contains examples of appearances which also are easily explained with the use of the Fourth Dimension. Twice, Jesus entered the room of the disciples without using a door (John 20:19-23, 26-29). Entering a room through its walls is only possible via the Fourth Dimension.
They revealed that while cells in every other organ in the body work in four dimensions – three spatial, and the fourth being time – the brain works routinely in seven and sometimes up to eleven.
But we can break this down. Our Universe as we know it has four dimensions: the three dimensions of space (up and down, left and right, back and forth), and one dimension of time that keeps us all ticking along.
According to Einstein , you need to describe where you are not only in three-dimensional space — length, width and height — but also in time. Time is the fourth dimension. So to know where you are, you have to know what time it is.
We are 3D creatures, living in a 3D world but our eyes can show us only two dimensions. The depth that we all think we can see is merely a trick that our brains have learned; a byproduct of evolution putting our eyes on the front of our faces.
Our brains cannot visualise how this dimension would actually be situated on a 4-D object orthogonally. Instead, we can represent how humans would comprehend a 4-D shape to look like from our 3-D perspective. We would perceive a 4-dimensional space as a 3-D projection.