what is cyclic process? what is cyclic time and can we detect anything before total cyclic process is over?

[neil2366]

everthing in universe seems to be happening in cyclic form,isn't it? day-night,year,seasons ,birth & death etc. some cycles are bigger and some are smaller at fundamental level. So one post question so some of you may haveperhaps insight pls share towards these questions.

[md65536]

everthing in universe seems to be happening in cyclic form,isn't it? day-night,year,seasons ,birth & death etc. some cycles are bigger and some are smaller at fundamental level. So one post question so some of you may haveperhaps insight pls share towards these questions.

You listed a few examples but you stopped before covering everything in the universe.

 

Non-reversible processes shouldn't be cyclical. The Big Bang does not seem to be part of a cycle. Entropy of a system increases, and does not later return to a previous value.

 

You should be able to detect a cyclical process by making forward and/or backward predictions and finding that the system will end up in the same state as a previous one.

 

 

[neil2366]

You listed a few examples but you stopped before covering everything in the universe.

 

Non-reversible processes shouldn't be cyclical. The Big Bang does not seem to be part of a cycle. Entropy of a system increases, and does not later return to a previous value.

 

You should be able to detect a cyclical process by making forward and/or backward predictions and finding that the system will end up in the same state as a previous one.

 

 

 

 

Thank you for reply. Big bang one can not digest yet & different views among many scientist. Entropy one has look up and yes it is concept but does not give me enough clarity.The law of entropy is conceived on the bases of time flow in one direction.Isn't it possible that simultaneous state where many intyeractions happens at ones so detections is not possible? Also entropy has always log formula? All planet,galaxys, sun attract =nagative entropy perhaps because all interactions in it combine & become dense =reduction in entropy? all these leads universe seen always in balance or expanding as per entropy concept?

[swansont]

Non-reversible processes shouldn't be cyclical.

In the thermodynamics sense even the rotation of the earth and its orbit are non-reversible, yet they are cyclic. At issue is the energy loss and entropy gain per cycle, which is relatively small, or, for process on a smaller scale, whether you can add energy.