Former Display Label - 'Moseley's apparatus'
The modern periodic table of the elements is arranged in order of increasing atomic number. The use of atomic number (now understood as the number of protons in the nucleus) rather than atomic mass is the result of Moseley's work just before World War I.
Moseley photographed the characteristic X-ray spectra of the elements, and related the X-ray frequencies to atomic number. His specimens were mounted on trolleys inside evacuated glass tubes and bombarded with electrons from cathode ray tubes. Moseley had graduated in Physics from Trinity College, Oxford in 1910. He then worked with Sir Ernest Rutherford in Manchester before returning to Oxford. On the outbreak of war he volunteered for the army and was killed in action at Gallipoli in 1915, aged only 27.
Other narratives:
- Provenance of Gaede pump
- Accession Record : Extract from Annual Report for 1935
- Henry 'Harry' Moseley and his experiments
Related Objects:
- Inventory No. 19106, "Main X-Ray Tube and Trolley Bobbin Tube, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 13312, "Mounted Potassium Ferrocyanide Crystal, associated with H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 15401, "Photographic Plate Holder, associated with H.G.J. Moseley?, Manchester/Oxford c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 16808, "Tin of Elements, associated with H.G.J. Moseley?, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 16892, "Thermometers and Spectra Glass Plates, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 17217, "Spectrometer, by Charles W. Cook for H.G.J. Moseley, Manchester, Early 1914" [1935-8], Cook, Charles W.
- Inventory No. 18597, "Spare X-Ray Tubes, by H.G.J. Moseley?, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 20275, "Lead Collimator Slit, by H.G.J. Moseley?, Manchester/Oxford c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 21548, "First X-Ray Tube on Stand, by H.G.J. Moseley?, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 21950, "Spare Tube with Trolley Bobbin, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 22996, "Trolley Apparatus for Target Samples, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 24646, "Spare Tube Apparatus with Trolley Bobbin, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 25825, "Unmounted Potassium Ferrocyanide Crystal, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 25957, "Unmounted Potassium Ferrocyanide Crystal, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 28094, "Mounted Potassium Ferrocyanide Crystal, associated with H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 28530, "Trolley by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 30436, "X-Ray Tube with Trolley, Bobbin and Line, by or for H.G.J. Moseley, Oxford, 1914" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 30649, "Copper Tube Sealed with Goldbeater's Skin, by H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 31168, "Collection of Apparatus and Chemical Samples associated with H.G.J. Moseley, Manchester/Oxford, c.1913" [1935-8], Moseley, Henry Gwyn Jeffreys
- Inventory No. 93669, "Gaede Air Pump associated with H.G.J. Moseley, by E. Leybold's Nachfolger, Köln (Cologne), c. 1907" [1935-8], Moseley, Henry Gwyn Jeffreys, E. Leybold's Nachfolger
- Inventory No. 97103, "Gaede Air Pump associated with H.G.J. Moseley, by E. Leybold's Nachfolger, Köln (Cologne), 1910" [1935-8], Moseley, Henry Gwyn Jeffreys, E. Leybold's Nachfolger
- Inventory No. 98186, "Photograph (Gelatine Print) of X-Ray Spectral Lines, by H.G.J. Moseley, Oxford, January 1970 (Original c.1913)", Moseley, Henry Gwyn Jeffreys