*dimensions*" and to try to give you a way of visualising what that means in practical terms. The word "

*practical*" is hardly appropriate when we are referring to states of being - of

*existence*- that are literally out of this world, but bear with me.

Esoteric science and spiritual definitions of dimensions include "

*vibrations*" or "

*planes of existence*". For example in the the theosophical and taoist traditions, there are seven named planes: the

*Physical, Astral, Causal, Akashic, Mental, Messianic*and

*Buddhaic*planes. Those who subscribe to a belief in Pleiadian extra terrestrials have a 12 "dimensional" definition of consciousness (more info about this at the foot of this post).

I want to make it clear that the dimensions referred-to in string theory are not (necessarily) the same. In this blog, when I refer to the word "dimension" I am using it as defined by the science of mathematics, unless stated otherwise.

In mathematics the dimensions of a point are the minimum number of co-ordinates necessary to define the position of that point. For now, forget the idea of space-time and try to imagine a dimensionless domain in which there exists a single point. That point has no height, width, depth or any other dimension that can define its position. This is the "

*zeroth*" dimension.

Now define another point, anywhere, and join it to the first by a line. We now have a one-dimensional object that has length but zero width. Another way of thinking about this 1D line is that it consists of an infinite number of points stacked side-by-side in the direction of the first dimension.

Now stack an infinite number of 1D lines side-by-side, parallel to one another. The shortest distance between any two of these lines would be at right angles to the line, measured in the direction of the second dimension. You can imagine that all these 1D lines when placed side by side, define a flat surface or a 2D plane. It has length and breadth but zero height.

Now stack an infinite number of 2D planes on top of one another. The shortest distance between any two of these planes would be at right angles to the plane, measured in the direction of the third dimension. You can imagine that all these planes when placed one on top of another, define a three dimensional domain, like the one that we live in which we call "

*space*".

It is a requirement of each new dimension that it must be at right-angles to all of the other dimensions. In mathematics we use an expression to describe the idea of all the dimensions being at right angles to one another. We say they are "

*mutually orthogonal*".

A diagonal line on the 2D plan can't be a new, third dimension in its own right because any point on that line can be defined entirely using 2D coordinates. Tilt that diagonal line upwards, above the 2D plane and you still haven't defined a new dimension because the line isn't at right angles to the plane. Only when the line is orthogonal to the plane is it possible to move along it - in the third dimension

*without changing your co-ordinates*in the first or second dimensions.

I'm using imagery to help you visualise higher dimensions one at a time, but now we have arrived at our familiar 3D space how can we visualise the 4th spacial dimension? I'll let physicist Carl Sagan do that for you in the following videos.

**CARL SAGAN DISCUSSES THE 4th SPACIAL DIMENSION**

Part 1

Part 1

**Part 2**

We can't easily conceptualise what a 4th spacial dimension might look like, but if you've followed my reasoning so far, you will appreciate that the 4th dimension consists of an infinite number of 3D spaces stacked parallel to one another at right angles. Perhaps these might be thought of as parallel worlds?

Continuing the idea, the 5th dimension is an infinite number of parallel 4D realms stacked together orthogonally, the 6th dimension is an infinite number of parallel 5D realms stacked together orthogonally and so-on until we reach the 10th spacial dimension which is an infinite number of parallel 9D realms stacked orthogonally.

The stacking order of the dimensions is important because each

*higher*dimension consists of an infinite number of realms of the next dimension down.

Supposing some or all of the extra dimensions of string theory are

*below*the first dimension? In other words, could they be a subset of 3D space? This would mean that our 3D space might actually be the 8th, 9th and 10th dimensions. The following video describes the model developed by mathematicians Theodor Kaluza and Oskar Klein in which a 4th spacial dimension is described as "curled-up" within 3D space. To my way of thinking, if they are contained within our space then they are

*lower*dimensions.

**The Extra Spatial Dimensions of String Theory**

We can only speculate about what the individual characteristics of each additional dimension are and how it adds meaning to the ones below. I subscribe to Rob Bryanton's visualisation as described in his book "Imagining the 10th Dimension". His video (shown below) has certainly reached the imagination of the public having scored nearly 1.5 million hits on YouTube.

**Rob Bryanton: Imagining the 10th Dimension**

Part 1

Part 1

**Part 2**

If you are confused by the fact that M-Theory states there are 11 dimensions and Rob is describing a 10-dimensional model, then realise that 10 dimensions are sufficient to describe reality and to unify gravity and quantum mechanics and that the 11th dimension is the one that explains why there are many possible 10D models. Rob has produced a vlog to discuss this in more detail - "Aren't there really 11 dimensions?"

The order of the dimensions is not important to my view of reality - specifically the role consciousness plays in the universe - but exactly where

*time*fits-in is one of those questions that has caused me a great deal of wonderment. In my next post "Is Time a Dimension?" I will discuss this in more detail.

From the perspective of THIS universe, I am "The REAL" Jeff Hall

**More reading**

Imagining other dimensions

http://www.pbs.org/wgbh/nova/elegant/dimensions.html

David Roberts 12 Dimensions of Consciousness (Esoteric)

http://www.pleiadianhealing.com/