avant-garde said:Do you think there is a way to reverse entropy?
avant-garde said:Do you think there is a way to reverse entropy?
ZapperZ said:Get some water, and cool it. There! You've "reversed" the entropy of that water.
Zz.
Topher925 said:It all depends on how you define your system. If you create an open system, sure you can. However if you choose an isolated system, then no.
Topher925 said:Ok, let's define a system of H2O and sand mixed together to create a homogeneous mixture in an closed system (I know I said open above). By mixing creating the mixture we create entropy. Now if we apply work to the system in the form of a large centrifugal force we separate the mixture removing entropy from the system. True, you are not actually reversing entropy as there is no such thing as an entirely reversible process. But it would be negative and removed from your system. I guess the real question is can you destroy entropy, which like you said the answer is no.
By applying work to separate the mixture you will increase the entropy generation within the system boundary. Hence, the entropy increases.
http://web.mit.edu/lhenders/www/papers/final.htmA mixture of classical ideal gases occupying a volume may be separated using semi-permeable membranes which are permeable to one gas but opaque to the others. The separation may be done reversibly using the membranes as pistons and keeping the whole system in contact with a reservoir at constant temperature[3]. To show that mixing has a thermodynamic effect, consider the following process restoring the mixture. After separation, each separated gas occupies the original volume alone. To return to the mixture, each gas is compressed to a volume (where is the concentration of the th gas). The compression requires work to be invested, and the entropy of the gas is reduced by . An increase in entropy of the same amount must then be associated with the mixing step of removing the partitions. This is the ‘mixing entropy’.
Topher925 said:Assuming this closed system is perfectly insulated like you said, how is this so? No heat is being transferred and the system is being "organized", therefor removing the mixture entropy.
As an example of what I attempted to convey in my last post, here's an example using ideal gases. Although originally attempted to explain quantum behavior I think it still applies.
http://web.mit.edu/lhenders/www/papers/final.htm
map19 said:Take a large amount of interstellar gas with very high entropy and throw it into a black hole. The entropy of the universe is decreased.
The concept of entropy refers to the natural tendency of systems to move from a state of order to a state of disorder. As humans, we cannot reverse this natural process, but we can slow it down or delay it through various methods.
According to the second law of thermodynamics, entropy always increases over time. This means that it is impossible for humans to fully reverse entropy as it goes against the natural laws of the universe.
While technology can slow down entropy, it cannot completely reverse it. For example, refrigeration technology can delay the spoiling of food, but it cannot prevent it from eventually decaying.
No, there are no known examples of humans fully reversing entropy. However, we can create the illusion of reversing entropy by organizing and cleaning our surroundings, but this does not change the overall entropy of the universe.
Scientists are constantly researching and experimenting with ways to delay or slow down entropy. Some areas of research include nanotechnology, biotechnology, and renewable energy sources, which all aim to improve efficiency and decrease disorder in various systems. However, reversing entropy completely is still considered impossible.