Noun
quantum number (plural quantum numbers)
(quantum mechanics) One of certain integers or half-integers that specify the state of a quantum mechanical system (such as an electron in an atom).
All quarks carry an additive, conserved quantum number called a baryon number (B), which is + 1 3 for quarks and − 1 3 for antiquarks. Source: Internet
For all pictures the magnetic quantum number m has been set to 0, and the cross-sectional plane is the xz-plane (z is the vertical axis). Source: Internet
In addition, the Stark effect also removes the degeneracy of energy states having the same total angular momentum (specified by the quantum number J). Source: Internet
For the purpose of nomenclature, the isospin projection I 3 isn't considered a flavour quantum number. Source: Internet
The azimuthal quantum number ℓ describes the orbital angular momentum of each electron and is a non-negative integer. Source: Internet
Classifying these particles led him to propose that a quantum number called strangeness would be conserved by the strong and the electromagnetic interactions, but not by the weak interactions. Source: Internet