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The previous post is quite complicated or abstract but the important thing there is to appreciate symmetry. Anyway, enough already for that freaking symmetry. Let's move on to a MORE interesting topic. I mean MILLION TIMES MORE interesting than symmetry.
Entropy.
What the fuck is Entropy you say? To be technical, it is the unavailability of a system to work. So you can try saying this at you boss when they asked you to work but you are already burned out:
BOSS:"Hey can you do this for me? I am lazy right now. You can't complain because I'm your boss." (SFX: Evil Laugh)
YOU: "I'm sorry boss but I can't. You know this thing called entropy. Right now it is as its maximum."
BOSS:"What the fuck?!" (His nose bleeds then He dies.)
See, it is quite useful. Anyway, entropy is the tendency of a system to give off its energy on the surrounding. Imagine this scenario: You are sitting in a park. You can consider yourself as a system and the park as a surrounding. It is important to take note that every system has a surrounding except for the universe since there is nothing outside the universe that engulfs it. Now we know what is system and surrounding, let us jump back to entropy.
Entropy.
We know according to the second law of thermodynamics that heat flows from the system with higher temperature to lower temperature. The vice versa of this is a sin for us physicists. The flow of heat can never be from cold to hot. This is entropy. Another example is that when you initially push a box on the floor, the ball will stop after some time. Why? WHY? Because some of its kinetic energy (energy in motion) is dissipated as heat due to the presence of friction on the floor. This is entropy since the capacity of the box to do work decreases. Positive entropy means the system go to a state where it has less energy thus lessening its ability to do work. When you threw a ball up in the air the ball collides with air particles. Some of the energy of the ball are transferred to the air particles.
The universe is not an exemption. When stars are born the universe must attend to this event thus transferring some of its energy to the newly born stars. The number of stars in the universe is proportional to time. This will lead us to a conclusion that there would come a time that there would be no proper energy that can be extracted from the universe.
The arrow of time only points forward. There is no other way to reverse entropy. Entropy can remain unchanged and this will happen when the system is already in its equilibrium state or maximum entropy. Aside from this, things are bound to be more chaotic and dull as time passes.
Now we have an excuse when our mommies scold us for dusts and dirts in our home. We can now tell them that our universe is following a positive entropy and these production of dust and dirt is just normal and inevitable.
To sum up all of these things, Entropy is a lazy man's excuse. COOL.
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The previous post is quite complicated or abstract but the important thing there is to appreciate symmetry. Anyway, enough already for that freaking symmetry. Let's move on to a MORE interesting topic. I mean MILLION TIMES MORE interesting than symmetry.
Entropy.
What the fuck is Entropy you say? To be technical, it is the unavailability of a system to work. So you can try saying this at you boss when they asked you to work but you are already burned out:
BOSS:"Hey can you do this for me? I am lazy right now. You can't complain because I'm your boss." (SFX: Evil Laugh)
YOU: "I'm sorry boss but I can't. You know this thing called entropy. Right now it is as its maximum."
BOSS:"What the fuck?!" (His nose bleeds then He dies.)
See, it is quite useful. Anyway, entropy is the tendency of a system to give off its energy on the surrounding. Imagine this scenario: You are sitting in a park. You can consider yourself as a system and the park as a surrounding. It is important to take note that every system has a surrounding except for the universe since there is nothing outside the universe that engulfs it. Now we know what is system and surrounding, let us jump back to entropy.
Entropy.
We know according to the second law of thermodynamics that heat flows from the system with higher temperature to lower temperature. The vice versa of this is a sin for us physicists. The flow of heat can never be from cold to hot. This is entropy. Another example is that when you initially push a box on the floor, the ball will stop after some time. Why? WHY? Because some of its kinetic energy (energy in motion) is dissipated as heat due to the presence of friction on the floor. This is entropy since the capacity of the box to do work decreases. Positive entropy means the system go to a state where it has less energy thus lessening its ability to do work. When you threw a ball up in the air the ball collides with air particles. Some of the energy of the ball are transferred to the air particles.
The universe is not an exemption. When stars are born the universe must attend to this event thus transferring some of its energy to the newly born stars. The number of stars in the universe is proportional to time. This will lead us to a conclusion that there would come a time that there would be no proper energy that can be extracted from the universe.
The arrow of time only points forward. There is no other way to reverse entropy. Entropy can remain unchanged and this will happen when the system is already in its equilibrium state or maximum entropy. Aside from this, things are bound to be more chaotic and dull as time passes.
Now we have an excuse when our mommies scold us for dusts and dirts in our home. We can now tell them that our universe is following a positive entropy and these production of dust and dirt is just normal and inevitable.
To sum up all of these things, Entropy is a lazy man's excuse. COOL.
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