## Second Law Thermodynamics

$\Delta S = \frac{q_{rev}}{T}$

504999222
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Joined: Tue Nov 13, 2018 12:18 am

### Second Law Thermodynamics

Just to clarify, the Second law of thermodynamics is an expression of the universal law of increasing entropy, stating that the entropy of an isolated system which is not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium?

Haley Dveirin 1E
Posts: 101
Joined: Sat Jul 20, 2019 12:17 am

### Re: Second Law Thermodynamics

Yes. In simpler terms, it essentially means that entropy always increases.

Callum Guo 1H
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### Re: Second Law Thermodynamics

yeah, the second law says that entropy of the universe is increasing

Ying Yan 1F
Posts: 101
Joined: Fri Aug 02, 2019 12:16 am

### Re: Second Law Thermodynamics

Exactly! Just like how a room naturally gets messy over time, the entropy( disorder) of the universe is constantly increasing, and work must be put in in order to decrease the entropy of a system.

J_CHEN 4I
Posts: 54
Joined: Tue Nov 14, 2017 3:01 am

### Re: Second Law Thermodynamics

The total entropy of a system either increases or stays constant, but never decreases. Entropy is always increasing in the universe until thermodynamic equilibrium (look up "the heat death of the universe").