Basicly the first dimension is a dot, it is just the coordinate x or y, the second dimension is the coordinate x and y. 3-D is x, y, and z.
wrong. The Zero Dimension :
Any body in the Zero Dimension is nothing but a point. It has no length, no breadth and no height. Hence it has no area and even no volume. So a point can never be drawn but we can only locate its position by a dot ('.'). To a body in the Zero Dimension there is nothing called 'something else'. It is the only 'thing' in its visual field. A point has no mass. It also has no motion. A particular point is always fixed in the space.
The First Dimension :
A body in the first dimension may be represented by a straight line. One may imagine that a point when engulfs infinite number of other points (it may be noted here that each and every Zero Dimensional point are exactly the same in appearance and other characteristics excepting their locations) in a particular direction, it forms a straight line. The motion of a straight line segment, which if imagined to be lying across from south to north, can only be from north to south or vice-versa. It can never turn to neither its right side nor to its left. A straight line has no area or volume. Hence like a point, it also cannot be drawn, but only located, and it also has no mass as it occupies no volume.
Footnote: In this chapter 'volume' designates to Three Dimensional Volume i.e. length � breadth � height. But the actual meaning of volume is quite different. For example, the volume of a 1-D object means only length. Volume of a 2-D object means : length � breadth , etc.
The Second Dimension :
Any plane figure drawn on a sheet of paper may be represented as a figure in the Second Dimension. It has two important characteristics: (1) Length and (2) Breadth. So it also has area and can be located. But it has no mass as it occupies no volume.
Let us consider a simple Two Dimensional figure, Rectangle, for further illustration. A rectangle may be imagined to be formed by putting a infinite number of straight lines one beside another along a definite plane so that all of those straight lines are
coplaner ;
parallel to each other ; and
the distance between them is '0 units' (for details please see Appendix Note 3 ).
The motion of a Two Dimensional figure may be in any direction on the plane on which it is lying, but it can never leave its plane (i.e. no upward or downward motion).
The Third Dimension :
The Third Dimension is the most familiar to us. Starting from the points and straight lines we 'draw' (We've already said that we can never draw a point or a straight line, but can only locate it. In reality what we draw on a paper is the Three Dimensional mark of graphite or ink. This mark has all the characteristics of a 3D figure, namely, length, breadth, height, surface area and volume). One can imagine a Three Dimensinal cube as an infinite number of squares put one upon another in a vertical axis (i.e. applying height to a Two Dimensional square).
The motion of a Three Dimensional 'solid' may be to:
Its left side ;
Its right side ;
Upwards ;
Downwards ;
Forwards ;
Backwards
It has no particular plane of existence, but exists over and through an infinite number of planes.
