Paper, 'Terrestrial refraction in the Western Himalayan Mountains' by James Thomas Walker
Reference number: PP/23/13
Date: 12 January 1894
Description
Walker writes: 'In the operations of the Great Trigonometrical Survey of India it is customary to determine the coefficient of refraction by reciprocal vertical observations between contiguous stations on the sides of all the principal triangles, and also as many as possible of the secondary triangles.'
Annotations in pencil and ink.
Subject: Optics
Received 13 January 1894. Read 1 March 1894.
A version of this paper was published in volume 55 of the Proceedings of the Royal Society as 'Terrestrial refraction in the Western Himalayan Mountains'.
- Reference number
- PP/23/13
- Earliest possible date
- 12 January 1894
- Physical description
- Ink and graphite pencil on paper
- Page extent
- 4 pages
- Format
- Manuscript
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Citation
James Thomas Walker, Paper, 'Terrestrial refraction in the Western Himalayan Mountains' by James Thomas Walker, 12 January 1894, PP/23/13, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/pp_23_13/paper-terrestrial-refraction-in-the-western-himalayan-mountains-by-james-thomas-walker, accessed on 12 February 2026
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https://makingscience.royalsociety.org/items/pp_23_13/paper-terrestrial-refraction-in-the-western-himalayan-mountains-by-james-thomas-walker
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Related Publications
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III. Terrestrial refraction in the Western Himalayan Mountains External link, opens in new tab.
Date: 31st December 1894
DOI: 10.1098/rspl.1894.0031
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James Thomas Walker
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Proceedings Papers
The archival collection known as 'Proceedings Papers' is comprised of manuscripts and occasional proofs of scientific papers sent to the Royal Society which were read before meetings of Fellows and printed in full in the Proceedings of the Royal Society.
Dates: 1882 - 1894
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