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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Creation & Evolution
Entropy and How can something come from nothing? And some evolution......
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<blockquote data-quote="Frumious Bandersnatch" data-source="post: 741736" data-attributes="member: 7449"><p>Of course it isn't. Who said it was? I know this and I know how to calculate the magnitude of the entropy changes and I learned&nbsp;how using the standard definition of closed systems as those that exchange energy and not mass. &nbsp; </p><p></p><p>I am beginning to wonder if you even know what a Carnot cycle is or how Clausius used the Carnot cycle to define entropy. It is taught in every basic course on thermo as far as I know. My point is that you can't do the type of elementary thermodynamics required to illustrate classical entropy and entropy changes, calculate efficiency of heat engines or explain the use of a gas thermometer to get absolute temperature, for example with closed systems that are defined as isolated. This is why I have always used the distinction between closed and isolated systems that I learned in PChem in college and Grad School, when either doing&nbsp; calorimetery&nbsp;or teaching thermodynamics. Feel free to use the&nbsp;dichotomous definition&nbsp;if you want since you probably don't have to explain Carnot cycles to anyone.&nbsp; </p><p></p><p>I think enough has been said about this subject.&nbsp; I plan to go back to arguing about creationism. Here are&nbsp;some pages illustrating the use of the Carnot cycle to explain entropy. </p><p></p><p><a href="http://cstl-cst.semo.edu/venezian/PH230/second_law_of_thermodynamics.htm" target="_blank">http://cstl-cst.semo.edu/venezian/PH230/second_law_of_thermodynamics.htm</a> </p><p></p><p><a href="http://www.andrew.cmu.edu/course/24-221/second-law.pdf" target="_blank">http://www.andrew.cmu.edu/course/24-221/second-law.pdf</a> </p><p></p><p>I am sure you will have to get in one last post. Have at it. </p><p></p><p>The Frumious Bandersnatch</p></blockquote><p></p>
[QUOTE="Frumious Bandersnatch, post: 741736, member: 7449"] Of course it isn't. Who said it was? I know this and I know how to calculate the magnitude of the entropy changes and I learned how using the standard definition of closed systems as those that exchange energy and not mass. I am beginning to wonder if you even know what a Carnot cycle is or how Clausius used the Carnot cycle to define entropy. It is taught in every basic course on thermo as far as I know. My point is that you can't do the type of elementary thermodynamics required to illustrate classical entropy and entropy changes, calculate efficiency of heat engines or explain the use of a gas thermometer to get absolute temperature, for example with closed systems that are defined as isolated. This is why I have always used the distinction between closed and isolated systems that I learned in PChem in college and Grad School, when either doing calorimetery or teaching thermodynamics. Feel free to use the dichotomous definition if you want since you probably don't have to explain Carnot cycles to anyone. I think enough has been said about this subject. I plan to go back to arguing about creationism. Here are some pages illustrating the use of the Carnot cycle to explain entropy. [URL="http://cstl-cst.semo.edu/venezian/PH230/second_law_of_thermodynamics.htm"]http://cstl-cst.semo.edu/venezian/PH230/second_law_of_thermodynamics.htm[/URL] [URL="http://www.andrew.cmu.edu/course/24-221/second-law.pdf"]http://www.andrew.cmu.edu/course/24-221/second-law.pdf[/URL] I am sure you will have to get in one last post. Have at it. The Frumious Bandersnatch [/QUOTE]
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Entropy and How can something come from nothing? And some evolution......
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