You can cool off your house, that doesn't violate the second law of thermodynamics. So, say you air condition your house in the summer. So, this should give you a clue to how you can "decrease entropy." To be specific, the second law states that "in a closed system, entropy can only stay the same or increase, never decrease." Just like how if you have a "closed system" everything will tend towards the same temperature instead of their being hot spots and cold spots.īut of course, we can make localized hot and cold spots. This is related to entropy due to the definition of temperature involving the derivative of entropy with respect to heat. It really is a statement of energy flows- primarily that heat will flow from a hot object to a cold one, and not the other way around. If you read the description of the second law of thermodynamics which is commonly thought of as the law that mentions how "entropy must always increase" you will have to dig in a while before you actually even see the word entropy. We make our world significant by the courage of our questions and by the depth of our answers. For more open-ended questions, try /r/AskScienceDiscussion | Sign up to be a panelist!.Looking for flair? Sign up to be a panelist!.Lisa Strauss, Sleep PsychologistĪlfred Russel Wallace's Birthday (b.1823)ĪskScience AMA Series: NIMH's 75th anniversaryĪsk Anything Wednesday - Engineering, Mathematics, Computer scienceĪsk Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology Neuroscience, Neurology, Neurochemistry, Cognitive NeuroscienceĪsk Anything Wednesday - Economics, Political Science, Linguistics, AnthropologyĪsk Anything Wednesday - Physics, Astronomy, Earth and Planetary ScienceĪskScience AMA Series: Dr. Medicine, Oncology, Dentistry, Physiology, Epidemiology, Infectious Disease, Pharmacy, Human Body Psychology, Cognitive Psychology, Developmental Psychology, Abnormal, Social Psychology Social Science, Political Science, Economics, Archaeology, Anthropology, Linguisticsīiology, Evolution, Morphology, Ecology, Synthetic Biology, Microbiology, Cellular Biology, Molecular Biology, Paleontology Mechanical Engineering, Electrical Engineering, Structural Engineering, Computer Engineering, Aerospace EngineeringĬhemistry, Organic Chemistry, Polymers, Biochemistry Mathematics, Statistics, Number Theory, Calculus, AlgebraĪstronomy, Astrophysics, Cosmology, Planetary FormationĬomputing, Artificial Intelligence, Machine Learning, ComputabilityĮarth Science, Atmospheric Science, Oceanography, Geology Theoretical Physics, Experimental Physics, High-energy Physics, Solid-State Physics, Fluid Dynamics, Relativity, Quantum Physics, Plasma Physics
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