Time as a 4th dimension
Can an instantaneous cube exist?
I have been keeping myself away from the classical sci-fi novels for no reason but now i have to say that was a wrong choice. This is the article derived from “The Time Machine by H.G. Wells”.
Every physical object that surrounds us has length, breadth and thickness. Sometimes one or two might be larger than the other that does not mean the object is one or two dimensional. We carry forth the same misconception with our beloved fourth dimension : TIME. Can a line with no thickness and breadth or plane with zero thickness exist in the physical world? They are just mathematical abstraction of physical objects. Similarly, Can a cube that does not last for any time at all, have a real existence? Absolutely not. For an object to exist in real world, it has to have an extension in all four dimension: length, breadth, thickness and time.
Visualization of 4th dimension: We have 3 perpendicular directions defining the 3D space then why not put one more direction at right angles to all the other three and construct a 4D space. As we know how 3D objects can be represented in 2D plane by taking proper perspectives, and similar approach can be taken to represent 4D object in 3D space. For instance, here is the portrait of me in 2009, another in 2012, another in 2015 and another in 2018. This is three-dimensional representation of my four-dimensional being:
So the question arises: We can move in 3D space such as left and right, up and down, etc but can we move in time as well? We have been moving in 2D plane in all the directions but to move upwards, we have inventions such as airplanes or space ships etc. So can we move forward and backward in time as well with the inventions?
There are paradoxes which break the logic given in the previous paragraph. Moreover, our consciousness moves continuously forward with time from the beginning to the end of our lives which is the reason for time travel being not possible, till now. Please read the classics and do not discriminate between time and other three dimensions.