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The Royal Society: Science in the Making

Paper, 'On a compensated air thermometer' by Hugh Longbourne Callendar

Reference number: PP/18/11

Date: 1891

Description

Callendar writes: 'In a paper which I had the honour to present to the Royal Society some four years ago “On the Practical Measurement of Temperature,” I described in detail a somewhat elaborate form of air thermometer with which it was found possible to attain an accuracy of the order of 0.01° C. I have since succeeded in overcoming some of the difficulties encountered in that investigation, and in evolving on similar lines a form of instrument which is capable of a much higher order of accuracy, and which has the further advantage that both the observations and the calculations are immensely simplified.'

Annotations in pencil and ink.

Subject: Scientific apparatus and instruments

Received 29 October 1891. Read 10 December 1891. Communicated by Joseph John Thomson.

A version of this paper was published in volume 50 of the Proceedings of the Royal Society as 'On a compensated air thermometer'.

Reference number
PP/18/11
Earliest possible date
1891
Physical description
Ink and graphite pencil on paper
Page extent
8 pages
Format
Manuscript

Creator name

Hugh Longbourne Callendar

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Citation

Hugh Longbourne Callendar, Paper, 'On a compensated air thermometer' by Hugh Longbourne Callendar, 1891, PP/18/11, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/pp_18_11/paper-on-a-compensated-air-thermometer-by-hugh-longbourne-callendar, accessed on 10 February 2026

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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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