Experimental atomic physics · 1887–1915
Henry Moseley
Moseley worked with Ernest Rutherford in Manchester before returning to Oxford in 1913. In a brief research career he measured characteristic X-ray spectra and helped give atomic number a physical basis. Oxford’s History of Science Museum preserves his spectrometer alongside his mother’s diary, connecting the apparatus to a life cut short when he was killed at Gallipoli in 1915.
Contribution & context
His X-ray measurements connected elemental sequence with nuclear charge. They supplied evidence for why atomic number, rather than atomic weight alone, should determine an element’s position in the table.
Moseley’s X-ray spectrometer and his mother’s pocket diary
Discoveries in context
How an ordering became a predictive system ↗
Meyer and Mendeleev recognized recurring chemical behavior; Moseley later connected an element’s position to measurable atomic structure.
Sources & further reading
- Moseley’s X-ray spectrometer and his mother’s pocket diary ↗History of Science Museum, University of OxfordHistorical account · Source checked
Sources and further reading. What the review labels mean