Physical System
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A Physical System is a system that is composed of physical items.
- Context:
- It is Composed of Two or more Interacting Physical Components.
- It can produce a Physical System Outcome.
- It can range from being an Open Physical System to being a Closed Physical System.
- It can range from being a Static Physical System to being a Dynamic Physical System.
- It can range from being a Non-Living System to being a Living System.
- It can have a Weight Property, Spatial Dimension, ..., Physical System Beauty Property.
- It can be referenced by a Physics Equation.
- ...
- Example(s):
- The Universe.
- a Solar System.
- a Stopped Clock.
- A Living System, such as a living human.
- An Organism Cell, that can express a subcellular protein localization process.
- A Computing System, such Wikipedia, or Google Scholar.
- A Mechanical System, such as an automobile.
- A Wheel (which can be a component of a vehicle).
- A Nanosystem.
- a Thermodynamic System.
- …
- Counter-Example(s):
- An Abstract System.
- A Software Program on computer storage.
- See: Physical Structure, Physics, Isolated System, Natural System, Mass-Energy Equivalence.
References
2014
- (Wikipedia, 2014) ⇒ http://en.wikipedia.org/wiki/physical_system Retrieved:2014-3-7.
- In physics, the word system has a technical meaning; namely, a physical system [1] is the portion of the physical universe chosen for analysis. [2] [3] Everything outside the system is known as the environment, which in analysis is ignored except for its effects on the system. The cut between system and the world is a free choice, generally made to simplify the analysis as much as possible. An isolated system is one which is supposed to have negligible interaction with its environment.
Often a system in this sense is chosen to correspond to the more usual meaning of system, such as a particular machine. But physical systems are often more esoteric: an atom, the water in a lake, or indeed the water in the left-hand half of a lake can all be considered as physical systems. In the study of quantum decoherence the "system" may refer to the macroscopic properties of an object (e.g. the position of a pendulum bob), while the relevant "environment" may be the internal degrees of freedom, described classically by the pendulum's thermal vibrations.
- In physics, the word system has a technical meaning; namely, a physical system [1] is the portion of the physical universe chosen for analysis. [2] [3] Everything outside the system is known as the environment, which in analysis is ignored except for its effects on the system. The cut between system and the world is a free choice, generally made to simplify the analysis as much as possible. An isolated system is one which is supposed to have negligible interaction with its environment.
- ↑ An Essay on the Investigation of the First Principles of Nature. By Felix O'Gallagher. J. Hill, at the College Printing-House, 1784.
- ↑ The Newtonian Revolution. By I. Bernard Cohen. Cambridge University Press, Apr 29, 1983.
- ↑ Papers on Mechanical and Physical Subjects: The sub-mechanics of the universe. By Osborne Reynolds, Arthur William Brightmore, William Henry Moorby. The University Press, 1903.
2009
- SUMO http://sigma.ontologyportal.org:4010/sigma/Browse.jsp?lang=EnglishLanguage&kb=SUMO&term=Process
- "Intuitively, the class of things that happen and have temporal parts or stages. Examples include extended events like a football match or a race, actions like Pursuing and Reading, and biological processes. The formal definition is: anything that lasts for a time but is not an Object. Note that a Process may have participants 'inside' it which are Objects, such as the players in a football match. In a 4D ontology, a Process is something whose spatiotemporal extent is thought of as dividing into temporal stages roughly perpendicular to the time-axis.")