dorsal/arxiv
View SchemaAnother Way To Realize Maxwell's Demon
| Authors | Xinyong Fu, Zitao Fu |
|---|---|
| Categories | |
| ArXiv ID | physics/0509111 |
| URL | https://arxiv.org/abs/physics/0509111 |
Abstract
This is another approach to realize Maxwell's "demon" hypothesis. Two Ag-O-Cs thermal electron ejectors, A and B, are settled in a vacuum tube. A non-uniform magnetic field exerted on the tube provides a one-way channel for the thermal electrons. Ejector A, losing electrons, charges positively, while ejector B, getting electrons, charges negatively, resulting in an electric voltage. In flying from A to B, the speed of the electrons decreases, and part of their thermal kinetic energy converts into electric potential energy. Thus, the temperature of the whole electron tube drops down slightly, and that can be compensated by the heat attracted from the ambient air. The device can provide a small but macroscopic power to an external load, violating Kelvin's statement of the second law.
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"abstract": "This is another approach to realize Maxwell\u0027s \"demon\" hypothesis. Two Ag-O-Cs\nthermal electron ejectors, A and B, are settled in a vacuum tube. A non-uniform\nmagnetic field exerted on the tube provides a one-way channel for the thermal\nelectrons. Ejector A, losing electrons, charges positively, while ejector B,\ngetting electrons, charges negatively, resulting in an electric voltage. In\nflying from A to B, the speed of the electrons decreases, and part of their\nthermal kinetic energy converts into electric potential energy. Thus, the\ntemperature of the whole electron tube drops down slightly, and that can be\ncompensated by the heat attracted from the ambient air. The device can provide\na small but macroscopic power to an external load, violating Kelvin\u0027s statement\nof the second law.",
"arxiv_id": "physics/0509111",
"authors": [
"Xinyong Fu",
"Zitao Fu"
],
"categories": [
"physics.gen-ph"
],
"title": "Another Way To Realize Maxwell\u0027s Demon",
"url": "https://arxiv.org/abs/physics/0509111"
},
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