entropy [en´trŏ-pe] 1.in thermodynamics, a measure of the part of the internal energy of a system that is unavailable to do work. In any spontaneous process, such as the flow of heat from a hot region to a cold region, entropy always increases. ...
entropysuperstrings/ entropythermodynamicssuperstringblack holesconcavitynegative heat capacitiesnonextensivitysuperadditivityIn the absence of experimental facts to support the study of the origins of the Universe and black holes, reliance must be shifted to theory, especially thermodynamics. To superstring ...
Theoretical or Mathematical/ black holes entropy superstrings/ entropy thermodynamics superstring black holes concavity negative heat capacities nonextensivity superadditivity second law of thermodynamics/ A0570C Thermodynamic functions and equations of state A1117 Theories of strings and other extended objects...
So, entropy in classical thermodynamics is defined only for systems which are in thermodynamic equilibrium. As long as the temperature is therefore a constant, it's a simple enough exercise to differentiate equation 1, and arrive at equation 2. ...
Entropy is defined as the quantitative measure of disorder or randomness in a system. The concept comes out ofthermodynamics, which deals with the transfer ofheat energywithin a system. Instead of talking about some form of "absolute entropy," physicists generally discuss the change in entropy tha...
ThermodynamicsEntropy maximizing methods are popular in geography, civil engineering, and planning, but are not easy for nonspecialists to understand. Entropy is a measure of uncertainty. A reasonable means of constructing models is to maximize uncertainty subject to the information which is given ...
Is reversing always possible in physical processes? Not all physical processes are reversible, especially those that involve significant changes or irreversible actions. 11 How does the concept of entropy relate to the ability to reverse processes? In thermodynamics, entropy is a measure of disorder;...
On the flip side, energy can decrease. This occurs as steam changes phase into water or as water changes to ice. The second law of thermodynamics is not violated because the matter is not in a closed system. While the entropy of the system being studied may decrease, that of the environm...
In the development of thermodynamics, 19th-century scientist Rudolf Clausius devised mathematical equations with which to describe the actions and relation... Howard,K Irmgard - 《Journal of Chemical Education》 被引量: 17发表: 2001年 What is Entropy? There are many definitions of information in ...
And systems, left to their own chaotic devices, will always seek higher entropy, simply because there are a lot more ways to make a mess than make a clean: the second law of thermodynamics. Learn more by listening to the episode ‘I give up, what is time? on the Ask A Spaceman ...