物理学中的熵理论及其应用研究  

A Study on Entropy Theory in Physics and Its Application

作　　者：张东[1] 张宁[2] 

机构地区：[1]北京联合大学基础部,北京100101 [2]北京联合大学信息技术研究所,北京100101

出　　处：《北京联合大学学报》2007年第1期4-8,共5页Journal of Beijing Union University

基　　金：国家"十五"教育科学重点立项课题(BIA010091-1-D03)

摘　　要：熵是物理学中的一个重要概念。从熵的定义和基本性质入手,讨论了3种熵的来源,探讨了负熵的概念以及其在开放系统中的重要意义。用熵理论分析了能量的品质,指出高熵值的能量是低品质的,而低熵值的能量是高品质的。用负熵的理论分析了生命的运动规律,指出负熵的存在是生命能够维持正常活动的基础条件。Entropy is an important concept in physics. The entropy theory is analyzed and discussed. Based on the def- inition and basic properties of entropy, the derivation of three entropies is discussed. The concept of negative entropy and its significance in open system is studied. The entropy theory is applied to the analysis of the quality of energy. It is pointed out that energy of high entropy value is low quality and the energy of low entropy value is high quality. With the negative entropy theory, the motion rule of life is analyzed, and the existence of negative entropy as a necessary condition for normal life maintenance is pointed out.

关 键 词：熵 负熵 系统 生命 能量 

分 类 号：O414.11[理学—理论物理]