Maxwell s demon extracts work from quantum measurement 10 july 2017, by lisa zyga the new maxwells demon extracts work from a system by making a quantum measurement. This paper proves that maxwell s demon is compatible with classical mechanics. Notice, by the way, that since macrovariable and macrostate are distinct notions by the. Since then this being, dubbed maxwell s demon by lord kelvin, has been an active topic of. Abstract szilards onemolecule engine is operated by a maxwells demon. Starting with the classic paradox of maxwells demon, we will discuss the erasure principle from the perspectives that will be of interest to us in. In particular it shows how the cycle of operation including measurement and erasure can be carried out with. Pdf download the road to maxwells demon conceptual. Media in category maxwell s demon the following 3 files are in this category, out of 3 total. Pdf maxwells demon, the famous thought experiment of james clerk maxwell, has been devised in 1867 as a counter example for the. Maxwell in 1867 in order to show that the second law of thermodynamics is not universal, since it has a counterexample. Maxwells demon is a thought experiment devised by j.
The road to maxwells demon request pdf researchgate. Conceptual foundations of statistical mechanics download. Cambridge core philosophy of science the road to maxwells demon by meir hemmo. Pdf download the road to maxwells demon conceptual foundations of statistical mechanics pdf. Maxwells demon thermodynamics physics khan academy. Conceptual foundations of statistical mechanics, by meir hemmo and orly r. Maxwell conceived a thought experiment as a way of furthering the. In the thought experiment, a demon controls a small door between two chambers of gas. As individual gas molecules approach the door, the demon quickly opens and shuts the door so that only fast molecules are. Scientists probe information retained by maxwells demon. The road to maxwells demon cambridge university press.
Demons, engines and the second law since 1871 physicists have been trying to resolve the conundrum of maxwell s demon. Science news was founded in 1921 as an independent, nonprofit source of accurate information on the. Pdf download the road to maxwells demon conceptual foundations of statistical mechanics pdf online. A thought experiment that seems to defy the 2nd law of thermodynamics. The state of the system is assumed to change in a reversible way implying quasi static. Maxwells demon is a thought experiment created by the physicist james clerk maxwell in. The road to maxwells demon meir hemmo, orly shenker. Explaining the notions of macrostates, probability, measurement, memory, and the arrow of time in statistical mechanics, they reach the startling conclusion that maxwell s demon, the famous perpetuum mobile, is consistent with the fundamental physical laws. Conceptual foundations of statistical mechanics by valia allori no static citation data no static citation data cite. Maxwells demon extracts work from quantum measurement. Here is something that i never understood about maxwell s demon paradox. Maxwell s demon is a thought experiment created by the physicist james clerk maxwell in 1867 in which he suggested how the second law of thermodynamics might hypothetically be violated. Conceptual foundations of statistical mechanics, by meir hemmo and orly shenker.
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