Today, we’ll discuss “Dimensions” in this blog. I will explain to you everything about **0D, 1D, 2D, 3D, 4D**, etc. So in this way, we have to know that “**What is A Dimension?**” first. Also, there are some other interesting things about dimensions so let’s start.

## What are Dimensions?

In physics or mathematics, a **Dimension** defines the minimum number of coordinates that anything in this space holds. All the things existing in the universe are in dimensions that may be in **0D, 1D, 2D, 3D**. Apart from this, we can also feel **4D** by using some techniques.

If you have heard about 6D, 7D, 8D, 9D, 11D, etc., I want to tell you these dimensions do not exist in the universe. These (6D, 7D, 8D, 9D, 11D, etc.) are only a rumour for user attraction. So do never believe in such things next time. Now let’s know about **0D, 1D, 2D, 3D**, and even **4D** one by one.

### What is Zero Dimensional (0D)?

A point and a particle are the examples of zero-dimensional as they do not have any length, width, volume, or mass. We can’t expand them in any direction, but we can see from our eyes. In that case, the object will be in zero dimension.”A dust particle and a point by a sharp pen are the best examples of 0D.”

### What is One Dimensional (1D)?

A straight line remains in one dimension because you can describe it only in one measurement, such as the line is 5 Meters long. A span of time is also one dimensional, such as 30 minutes. After all, I want to tell you that a line is “a perfect example of one-dimensional” because we can expand a straight line in only two directions.

If we talk about time, then time is constantly running without any break in a direction. For example- if this time passed, it will never come in your life.

### What is Two Dimensional (2D)?

A flat figure with width and length (**2 Dimensions**) always remains in **2D**. Moreover, it doesn’t have any height or thickness. If you draw two points on a graph in the x, y coordinate and draw a straight line between them, it will be in two dimensions.

A rectangle, circle, square and triangle are the most common examples of two-dimensional things.

### What is Three Dimensional (3D)?

A three-dimensional object includes length, width, and height. If you can feel any thickness or depth in anything, those objects will be **3D (three dimensional)**. If you are thinking of plotting points on a graph, you will need to know the x, y, z coordinates for the vertices. Usually, most of the things on this earth are in 3D. “A Cube, Cone, Cylinder are the perfect examples of 3D”.

### What is the Fourth Dimensional (4D)?

**4th Dimensional** is a different state of dimensions. We can even say that 4D is an artificial dimension because it is made by humans using some advanced techniques. You may have heard about 4DX cinemas, where we can feel the fourth dimension. In 4D cinemas, you simply watch a 3D movie but with some unusual things (moving chairs, wind & water drop effect, etc.) that make you feel everything is happening with you in real.

For example- In the movie, if there is raining, you will feel water drops on your body, if the wind is blowing, you will feel the wind around you touching your body. If the frame is moving, your chair will also move accordingly, etc. This type of systems and the combination with three dimensions makes a new artificial dimension, which we called **4D**.

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