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| Keywords: Moseley step ladder.jpg en Photographic recording of characteristic x-ray emission lines of a range of elements from calcium to copper and of zinc; see also http //www hcc mnscu edu/chem/abomb/page_id_61747 html http //www geology wisc edu/~johnf/g777/EPMA-history html Henry Moseley 1887 - 1915 1914 PD-Old Henry Moseley X-ray spectrometry | ||||
