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Open system (systems theory)

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+#REDIRECT [[Open system (systems theory)]]
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-In [[science]] and [[engineering]], a [[physical system|system]] is the part of the [[universe]] that is being studied, while the '''environment''' is the remainder of the universe that lies outside the boundaries of the system.  It is also known as the '''surroundings''' or '''neighborhood''', and in [[thermodynamics]], as the '''reservoir'''.  Depending on the type of system, it may interact with the environment by exchanging [[mass]], [[energy]] (including [[heat]] and [[Work (physics)|work]]), [[linear momentum]], [[angular momentum]], [[electric charge]], or [[Conservation law (physics)|other conserved properties]].  In some disciplines, such as [[information theory]], [[information]] may also be exchanged.  The environment is ignored in analysis of the system, except in regard to these interactions.
-==See also==
-<!-- New links in alphabetical order please}} -->
-*[[Bioenergetic systems]] - energy system
-*[[Earth system science]]
-*[[Environment (biophysical)]]
-*[[Environmental Management System]]
-*[[Thermodynamic system]]
-==External links==
-* [http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/envisys.html Geography of transport systems] people.hofstra.edu
-* [http://www.epa.gov/ems/ Environmental Management Systems] epa.gov
-* [http://eesc.columbia.edu/courses/ees/ Earth's Environmental Systems] eesc.columbia.edu
-[[Category:Thermodynamic systems]]
-{{Physics-stub}}
-{{Systemstheory-stub}}