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The second law of thermodynamics is a physical law based on universal empirical observation concerning heat and energy interconversions. A simple statement of the law is that heat always flows spontaneously from hotter to colder regions of matter (or 'downhill' in terms of the temperature gradient).
Vor 3 Tagen · Learn the definition, statement, and applications of the second law of thermodynamics, which describes the amount of useful work that can be done from a heat process. Find out how entropy, heat engines, and the universe are related to this law.
- The Editors of Encyclopaedia Britannica
- The second law of thermodynamics asserts that heat cannot move from a reservoir of lower temperature to a reservoir of higher temperature in a cycl...
- Scottish physicist William Thomson, also known as Lord Kelvin, and German physicist Rudolf Clausius developed the second law of thermodynamics in t...
- One notable example of the second law of thermodynamics is the heat engine model. Heat engines involve a cycle of increasing and decreasing tempera...
- The second law of thermodynamics posits that the transfer of energy involves some released as heat. This inefficient energy transfer plays a role i...
- Some have contended that the second law of thermodynamics disproves evolution because the law stipulates that entropy always increases, whereas evo...
The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The second law also states that the changes in the entropy in the universe can never be negative.
the second law of thermodynamics: A law stating that states that the entropy of an isolated system never decreases, because isolated systems spontaneously evolve toward thermodynamic equilibrium—the state of maximum entropy. Equivalently, perpetual motion machines of the second kind are impossible.
Learn the definition, statements, and applications of the second law of thermodynamics, which relates entropy, time, and spontaneity. Explore the Carnot engine, Clausius and Kelvin's statements, and Gibb's free energy.
Learn about the four laws of thermodynamics, the branch of physics that deals with heat, work, temperature, and energy. The second law states that entropy of a closed system increases over time and heat cannot be converted into work.
Learn the basic principles and applications of the second law of thermodynamics, which limits the efficiency of heat engines and the spontaneous flow of heat. Explore the waterfall analogy, the Kelvin-Planck and Clausius statements, and the concept of entropy.
