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First law of thermodynamics

First law of thermodynamics

this law, derived from the principle of conservation of energy, is expressed as &#144E = Q - W, where &#144E is the internal change in energy, Q is the heat the environment transfers into the system, and W is the work the system does. In other words, it means that:

The internal energy in a system isolated from other systems remains constant

The change in the internal energy of a system that is not isolated is equal to the energy that crosses its boundariesinto or out of other systemsIt can be further extrapolated to mean that despite all the processesgoing on in the universe, the total energy contained in the universeremains constant.

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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: 253673

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: 56456

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: 4029

Online Study-Summary Resource

... simply nothing after the journey to death other than entropy / second Law of Thermodynamics, and the return of "US" to the infinite Monkey Cage. Please do not ...

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by johncornick
Thu Jun 21, 2012 11:18 pm
Forum: General Discussion
Topic: Online Study-Summary Resource
Replies: 1
Views: 2500


... on that though. Because of Newton’s Third Law, if you are able to use your cardiac or neural ... :) 1. I'm fully aware of the second law of thermodynamics (I use it to argue an infinite universe ... no need for more complicated controls). If the first group (claim/stress) showed a higher tendency ...

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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: 194239
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