Entropy Rise: Causes and Effects

[HWGXX7]

Hello,

I'd like to get some more accurate idea of entropy in general: $$dS=\int\frac{dQ}{T}$$

Given an adiabatic isolated system. Work is irrerversible done onto this system.

Entropy will rise because of the fact that some of the work is transformed into irreversible losses and therefore $$dQ$$ increases.

A reversible system will not undergo a rise in entropy because of the fact that no losses will occur, so $$dQ=0$$ and entropy will remain the same.

Must I also assume that even when the losses are reversible transformable into work again, the transformation is still labelled 'irreversible' . Because losses are inherent factor of a irreversible system (KELVIN) ?

Is this somehow a correct interpretation I have?

ty&grtz

 

[darkxponent]

Yeah that is the explanation my thermodynamics teacher gave. I don't know what is modern physics take on entropy. So who is going to exlpain to us?

 

[HWGXX7]

I don't what is modern physics take on entropy.

What did you mean with that?

grtz

 

[darkxponent]

What did you mean with that?

I missed a word.

 

[sardar]

Hello,

Thank you for your question about entropy. Entropy is a measure of the disorder or randomness in a system. It is often referred to as the second law of thermodynamics, which states that the total entropy of an isolated system will always increase over time.

In your scenario, where work is being done on an adiabatic isolated system, the entropy will indeed increase. This is because some of the work being done will be converted into heat, which is a less ordered form of energy. This increase in heat leads to an increase in entropy. In a reversible system, where no losses occur, the entropy will remain constant.

It is important to note that even if the losses in a system can be transformed back into work, the overall process is still considered irreversible because entropy has still increased. This is because the energy has become less organized and more dispersed, leading to an overall increase in entropy.

I hope this helps clarify your understanding of entropy. It is a complex concept, but a fundamental one in thermodynamics and the study of physical systems. If you have any further questions, please don't hesitate to ask.

Best regards,

Scientist