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Record Details

Lead Collimator Slit, by H.G.J. Moseley?, Manchester/Oxford c.1913

Object is on display.
Inventory Number: 20275
Object Type:
Persons: Henry Gwyn Jeffreys Moseley
Date Created: c. 1913
Place Created: Manchester England United Kingdom Europe
Accession Number: 1935-8
Brief Description: This piece of apparatus is attributed to Henry Moseley and was probably used by Moseley, first at Manchester in 1913 and then at Oxford from November 1913 to the summer of 1914. He studied chemical samples using X-ray spectroscopy and hence determine their atomic number. The results were published in the ‘Philosophical Magazine’ in 1913 and 1914.

A collimator slit is an essential part of any spectrometer, as it restricts the input beam of particles or waves so as to produce sharp spectral lines. They were a feature of all Moseley’s experiments on X-rays, from his diffraction studies with Charles Garlton Darwin in Manchester from November 1912 onwards to his own definitive spectroscopic experiments conducted in 1913 and 1914. Moseley mostly used a lead collimator slit like this one but sometimes replaced it with a platinum collimator slit.

See attached narrative 'Henry 'Harry' Moseley and his experiments' for further details.
Provenance: Used by H.G.J. Moseley at the Electrical Laboratory, Oxford
Collection Group:
Material(s): Lead
Height Width Depth Diameter Unit
60 67 15 mm


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