Wikipedia - Principle of Min. Energy
Field of reference: Physics
Description: Closed physical systems will tend to "arrange" their sub-systems (elements) in such a way that will minimize the system's potential energy while at the same time maximize it's entropy (the level of complexity). In general, lower energy states corresponds with lower entropy, therefore keeping a balance between maximum entropy and minimum energy has some unique and interesting manifestations in physical systems.
"A closed system, on the other hand, is a system which is connected to another system, and may exchange energy, but not mass, with the other system. If, rather than an isolated system, we have a closed system, in which the entropy rather than the energy remains constant, then it follows from the first and second laws of thermodynamics that the energy of that system will drop to a minimum value at equilibrium, transferring its energy to the other system. To restate: * The maximum entropy principle: For a closed system with fixed internal energy (i.e. an isolated system), the entropy is maximized at equilibrium. * The minimum energy principle: For a closed system with fixed entropy, the total energy is minimized at equilibrium. This should not be confused with the minimum total potential energy principle which states that, at equilibrium, the total potential energy of a system with dissipation will be at a minimum, which is a special case of the maximum entropy principle."
| שייך לנושאים: 1-13 - חינוך אינטגרלי, -מקורות מדעיים, הטבע, 2. הטבע כמערכת |
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