What is time?

[emessay]

1. When time would be necessary 'recalled' then conscious human would be coming as a witness to confirm that it was happened a conscious universe.
2. We are in a cockpit of 'space-time ship' through life since 3.8- 4.5 bya to surviellence universe.
3. The cockpit of 'conscious universe space ship' is singular event, so time is irreversible.
4. Life would be singular event, it's only one earth of one hope for human in universe.
5. People say that we're going somewhere and not alone, I agree.
6. But if you say someday we would be going somewhere in a cockpit of Captain Jean Luc Picard's Enterprise Space-Ship, I would try to understand it.
7. So time is function and it's meaningful for every species who ever lived on earth.

[infamous]

Originally Posted by Qfwfq

I don't think he was asking for a dictionary definition.

Good point Qfwfq; Our conscious preception of time can only be described as a memory within our frame of experience. However when viewed from a scientific perspective, time has a close relationship with the flow of Entropy in a closed system. Before the Big Bang, if one so chooses to hold to the standard model, time did not exist. If our universe is closed as most believe, then as energy winds down and Entropy increases, there will come a point in time very far in the future where all energy will have been exhausted. At this place in history all motion will cease and Entropy will have reached it's limit. Assuming that our universe has remained closed up to this point, time will cease to exist . Time is the memory of the passage of energy thru zero point Entropy to it's ultimate limit.

[Qfwfq]

Even at maximum entropy, events will still be occurring in detail. This is so, e. g., in a block of lead at thermal equilibrium.

[infamous]

Originally Posted by Qfwfq

Even at maximum entropy, events will still be occurring in detail. This is so, e. g., in a block of lead at thermal equilibrium.

Is it a true statement to say that maximum entropy will not be reached until all molecular motion has stopped? At absolute zero this should occur, and when all motion has stopped, how is it possible for time to register? Could you explain what events might still occur after maximum entropy has been reached? And if we can define them as events, doesn't that neccessitate some form of motion?

[Qfwfq]

Originally Posted by infamous

Is it a true statement to say that maximum entropy will not be reached until all molecular motion has stopped?

No.

To the contrary, at absolute zero you don't have the disorder of thermal agitation, yo have low entropy. A perfectly isolated physical system has maximum entropy when all energy is of purely thermal nature and all at the same temperature. From that point you couldn't use a thermal engine to change any of the energy into mechanical or other organized forms, you certainly couldn't lower the temperature at all, let alone to absolute zero.

[infamous]

Originally Posted by Qfwfq

No.

To the contrary, at absolute zero you don't have the disorder of thermal agitation, yo have low entropy. A perfectly isolated physical system has maximum entropy when all energy is of purely thermal nature and all at the same temperature. From that point you couldn't use a thermal engine to change any of the energy into mechanical or other organized forms, you certainly couldn't lower the temperature at all, let alone to absolute zero.

Yes I see Qfwfq; I continually misinterpretate the meaning of Entropy. So let me rephrase my comments; When the universe has reached it's final stage of evolution, and entropy is at it's maximum, thermally homogenious, will it then eventrually cool to absoulute zero? And if it is uniformly at absoulute zero, wouldn't this still be at a maximum state of entropy because in this closed system there would exist no place within it where a disparity of thermal agitation could exist?? Whether at 3 degrees Kelvin or at 0 degrees Kelvin, if it is thermally homogenious, wouldn't it still be at maximum entropy??

[Qfwfq]

Originally Posted by infamous

When the universe has reached it's final stage of evolution, and entropy is at it's maximum, thermally homogenious, will it then eventrually cool to absoulute zero?

No, cooling would mean decreasing entropy. Cooling down to A0 would mean decreasing entropy to 0.

[infamous]

Originally Posted by Qfwfq

No, cooling would mean decreasing entropy. Cooling down to A0 would mean decreasing entropy to 0.

So your saying the universe will not cool to AO? Because entropy will only increase in a closed system.

[Qfwfq]

Not according to thermodynamics. The second principle is a statistical principle. To get around it you would have to do something smart to each individual vibrating particle.

[infamous]

Originally Posted by Qfwfq

No, cooling would mean decreasing entropy. Cooling down to A0 would mean decreasing entropy to 0.

Why do I see a paradox developing here. Shortly after the Big Bang the universe was incredibly hot after which it began to cool. The second law tells me that in a closed system entropy can only increase but, this explanation says that because the universe is cooling, entropy is decreasing. It's becoming clear to me that I'm missing something about the defination of entropy.