measurement in nLab
Measurement
Context
Physics
physics, mathematical physics, philosophy of physics
Surveys, textbooks and lecture notes
theory (physics), model (physics)
experiment, measurement, computable physics
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Axiomatizations
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Tools
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Structural phenomena
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Types of quantum field thories
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Measurement
Idea
In principle, any interaction between two physical systems is a measurement, whereby each system measures the state of the other. In practice, we break the symmetry by treating one system as the real physical system SS of study and the other system as merely a measuring apparatus AA with the sole purpose of measuring SS. If the properties of AA are more directly observable than those of SS, then this is useful.
References
- Wikipedia, Measurement
Last revised on May 19, 2019 at 14:05:49. See the history of this page for a list of all contributions to it.