What does the Arrow of Time mean ?

In this blog I am going to tell you about time and the arrow of time. We’ve all sat in class looking at the clock and waiting for the class to get over. You might have even worried about the hands would go backwards…...But, of course not ! that’s not possible. There are many things we don’t know about time but yet we all seem to encounter many of its behaviors in our daily life, one of which is “The difference between space & time”.

In space we can move as far as we want and even go backwards or turn in any direction but however with time there is an “Irreversibility” that happens. For example, you have enjoyed your weekend without any kind of work but you can just go back in time enjoy that weekend over and over again skipping Monday, this is called the irreversibility of time. It’s just like an arrow, it can’t be stopped or brought back to the bow from which it was fired.

This may define an aspect of time but how can we describe the “Arrow of time” even more…...Forward motion or an unstoppable dimension ? its “Entropy”. So, you maybe asking “what’s entropy ?”. The entropy is the central component of the second law of thermodynamics, Entropy is an idea that says “Universe is constantly progressing or rather declining from “Order to chaos”. For example, consider a building whose each and every brick is laid perfectly and its design is best as it can be…...however the more the time passes, more and more bricks will be damaged due to factors like wind ,water etc. So, the building is the universe and its getting closer to destruction as the time passes by !. But you may say, “What if I replace the damaged bricks with new ones?”, yes you may replace it but eventually it will wear out too and the idea of replacing the bricks is an entropy in itself. Because if you replace the bricks, the building will not be perfect as it was before that is the “order means the perfect building at the start and the wearing out of the bricks is the progression towards chaos (destruction)”. The same goes with the universe, if we try to fix or change our present we would eventually end up in the future due to the arrow of time !. We can say that the arrow of time was fired from the bow 13.8 Billon years ago…...that is we can say the time started when the universe was born. But still we aren’t able to know or understand time completely yet and the concept of time is truly a mystery and quite interesting

Thanks for reading. Do leave a comment and let me know how was this blog of mine. You may also correct my mistakes by telling me in the comments. Stay tuned until next time !