eric1 Posted May 24, 2009 Share Posted May 24, 2009 I have many friends that deny that law of the conservation of energy. If it were not true, what would entropy be like? If energy is being created, wouldn't coffee not become room temperature? I am new to the forums so I am not sure if this belongs in the pseudoscience area or not. Link to comment Share on other sites More sharing options...
Reaper Posted May 24, 2009 Share Posted May 24, 2009 All entropy states is that all things go from order to disorder in an isolated system. If the law of conservation of energy were not true, for example, energy was created, we would have some very serious problems... coffee not being room temperature would only be the tip of the iceberg. Link to comment Share on other sites More sharing options...
eric1 Posted May 24, 2009 Author Share Posted May 24, 2009 What are some examples of the serious problems? Link to comment Share on other sites More sharing options...
Kaeroll Posted May 24, 2009 Share Posted May 24, 2009 Out of curiosity, who are said friends and what are their objections? (Curiosity. Honest. Not part of a great scientific conspiracy to silence those who disagree with thermodynamics. Shh.) Link to comment Share on other sites More sharing options...
eric1 Posted May 25, 2009 Author Share Posted May 25, 2009 It was really about a philosophical discussion. I suggested that because the universe is highly differentiated and is constantly coming to sameness, it must have had a start (Big Bang) and is not eternal. If there was no beginning (not expanding) then there is no reason why total entropy has not taken place. Link to comment Share on other sites More sharing options...
MM6 Posted May 26, 2009 Share Posted May 26, 2009 I'm not aware of any breaches of the law of entropy. The universe is an open system. Thus, even though the system as a whole is increasing in entropy, there are pockets of decreasing entropic states (explained by dynamical systems theory). I'm not clear on your conclusion that the universe cannot be eternal according to the 2nd law. The universe can reach maximum disorder and remain like that indefinitely, can't it? Btw, you use an distracting number of double negatives in your sentences. Link to comment Share on other sites More sharing options...
eric1 Posted May 27, 2009 Author Share Posted May 27, 2009 Well I was explaining to them that the universe must have had a start, such as the big bang, because if it didn't, there is no reason why we haven't reached maximum entropy. It could definitely be everlasting. Back to the original question... How would the creation of energy effect entropy and other major theories on the universe? Link to comment Share on other sites More sharing options...
swansont Posted May 27, 2009 Share Posted May 27, 2009 If energy is not conserved it means that the laws of physics change over time. Link to comment Share on other sites More sharing options...
maha Posted May 28, 2009 Share Posted May 28, 2009 Entropy is a concept applied across physics, information theory, mathematics and other branches of science and engineering. The following definition is shared across all these fields: S = - k\sum_i P_i \ln P_i \! where S is the conventional symbol for entropy. _________________________________________________ floating tanks hgh Link to comment Share on other sites More sharing options...
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