Moseley's lawis anempirical lawconcerning the characteristicx-raysthat are emitted byatoms. The law was discovered and published by the English physicistHenry Moseleyin 1913. It is historically important in quantitatively justifying the conception of the nuclear model of the atom, with all, or nearly all, positive charges of the atom located in the nucleus, and associated on an integer basis withatomic number. Until Moseley's work, "atomic number" was merely an element's place in the periodic table, and was not known to be associated with any mMoseley's law is an empirical law concerning the characteristic x-rays that are emitted by atoms. The law was discovered and published by the English physicist Henry Moseley in 1913. It is historically important in quantitatively justifying the conception of the nuclear model of the atom, with all, or nearly all, positive charges of the atom located in the nucleus, and associated on an integer basis with atomic number. Until Moseley's work, "atomic number" was merely an element's place in the periodic table, and was not known to be associated with any measurable physical quantity measurable physical quantity.

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