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Second law of thermodynamics

second law of thermodynamics

(Science: physics) All of the chemical and physical processes in a closed system tend to drive that system toward maximum entropy.

Clausius statement: no device can operate in a cycle and allow heat to transfer from a colder body to a hotter body unless other compensating activities are taking place.

kelvin-Planck statement: no device can operate in a constant-temperature cycle and convert the heat it receives into work, unless other other compensating activities are taking place.

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Re: Why do Africans have large noses and lips?

... their survival. Our body has many cooling mechanisms and one of them is simply disseminating heat when it comes in contact with colder air (simple thermodynamics). This however requires larger surface area so that more heat can be disseminated. Given that a significant portion of breathing also ...

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by kristi2374
Mon Dec 29, 2014 2:07 am
Forum: Human Biology
Topic: Why do Africans have large noses and lips?
Replies: 35
Views: 254742

Re: Evolution or De-evolution?

... with that. Living organisms always break the second thermodynamic law! What is the point anyway? That we were created because otherwise the second thermodynamics law would not work?

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by JackBean
Wed Feb 19, 2014 10:18 am
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 56825

Increase in free energy in glycolysis

I have a fair foundation in chemical thermodynamics from my general chemistry courses, but I have not had a class in biochemistry. This question, however, is about thermodynamics. Unfortunately, while I appreciate your reponse, it doesn't answer ...

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by cadamcross
Wed Feb 05, 2014 3:10 am
Forum: Molecular Biology
Topic: Increase in free energy in glycolysis
Replies: 3
Views: 4063

Online Study-Summary Resource

... the journey to death other than entropy / second Law of Thermodynamics, and the return of "US" to the infinite ...

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by johncornick
Thu Jun 21, 2012 11:18 pm
Forum: General Discussion
Topic: Online Study-Summary Resource
Replies: 1
Views: 2516


... on that though. Because of Newton’s Third Law, if you are able to use your cardiac or neural ... happened. :) 1. I'm fully aware of the second law of thermodynamics (I use it to argue an infinite universe theorem). ...

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by JoshuaFlynn
Thu May 31, 2012 1:18 pm
Forum: Human Biology
Topic: Electromagnetic fields generated by the human body
Replies: 40
Views: 194982
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