"The \"Total Angular Quantum Number\" describes the magnitude of total angular momentum \\(J\\), where \\(j\\) refers to a specific particle and \\(J\\) is used for the whole system."^^ . "j" . "http://en.wikipedia.org/wiki/Quantum_number"^^ . "Total Angular Momentum Quantum Number"@en . . . . . . . "http://www.iso.org/iso/catalogue_detail?csnumber=31894"^^ . . .