Accession Number : ADA259901
Title : Maxwell's Demon, Rectifiers, and the Second Law: Computer Simulation of Smoluchowski's Trapdoor
Descriptive Note : Memorandum rept.
Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB
Personal Author(s) : Skordos, P A ; Zurek, W H
Report Date : Sep 1991
Pagination or Media Count : 23
Abstract : We have simulated numerically an automated Maxwell's demon inspired by Smoluchowski's ideas of 1912. Two gas chambers of equal area are connected via an opening that is covered by a trapdoor. The trapdoor can open to the left but not to the right, and is intended to rectify naturally occurring variations in density between the two chambers. Our results confirm that though the trapdoor behaves as a rectifier when large density differences are imposed by external means, it can not extract useful work from the thermal motion of the molecules when left on its own.
Descriptors : *MATHEMATICAL MODELS , *COMPUTERIZED SIMULATION , *DOORS , *HEAT ENGINES , *ENERGY CONVERSION , *TRAYS , SIMULATION , DENSITY , ARTIFICIAL INTELLIGENCE , WORK , OPENINGS , RECTIFIERS , CHAMBERS , HEAT , EXTERNAL , ENGINES , MOLECULES , MOTION , VARIATIONS
Subject Categories : Thermodynamics
Distribution Statement : APPROVED FOR PUBLIC RELEASE