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A delimited portion or idealized part of the physical world selected for description by a physical theory or model.
The boundary and degrees of freedom are chosen for the problem; the same physical situation can support several valid system decompositions.
wp-physics-physical_systemnlab-physics-physical_systemnist-quantum-theoryEach relation below ends at this concept.
No direct relations are authored in this direction.
Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
One-electron atomic systems are physical systems that include neutral hydrogen and hydrogenlike positive ions with one bound electron.
The target is a member or subtype of the broader source class.
wp-physics-one_electron_atomnist-hydrogenwp-physics-atomnlab-physics-atomThis is an authored directed relation from the source endpoint to the target endpoint.
Physical quantities characterize properties or possible measurements of a system.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
wp-physics-physical_quantitynist-codatawp-physics-physical_systemnlab-physics-physical_systemThis is an authored directed relation from the source endpoint to the target endpoint.
A physical theory assigns a space of allowed states to a selected physical system; the same system may admit different state descriptions in different effective theories.
The target represents a state, property, observable, or state-dependent description associated with the source system or theory.
nist-quantum-theorywp-physics-physical_statenlab-physics-statewp-physics-physical_systemnlab-physics-physical_systemThis is an authored directed relation from the source endpoint to the target endpoint.
A quantum system is a physical system represented in quantum theory.
A more specific theory, model, entity class, or regime is obtained by restricting or extending the scope of a broader framework.
wp-physics-quantum_systemnlab-physics-quantum_systemwp-physics-physical_systemnlab-physics-physical_system