| Reference number | AP/78/5/1 |
| Level | Item |
| Title | Unpublished manuscript, 'The specific heats of air and carbon dioxide. Details of the method of calibration of the potentiometer, with record of data' by W F G [William Francis Gray] Swann |
| Creator | Swann; William Francis Gray (1884-1962); Anglo-American physicist |
| Date | 1908 |
| Description | Swann undertook an experiment in which a steady stream of gas was passed through a jacketed tube (the calorimeter proper), in which it was heated by a current of electricity passing through a platinum coil of 1 ohm resistance, the rise in temperature being measured by two 12-ohm platinum thermometers used differentially. In this paper he describes the method of calibration of the potentiometer used and presents experimental data.
Annotations in pencil and ink throughout. Note on front reads 'Not to be printed, to be preserved in the archives of the Royal Society.' Includes five plates of diagrams of experimental apparatus.
Subject: Chemistry / Thermodynamics
Received 8 October 1908. Communicated by H L [Hugh Longbourne] Callendar.
An associated paper was published in volume 210 of the Philosophical Transactions of the Royal Society A as 'On the specific heats of air and carbon dioxide at atmospheric pressure by the continuous electric method at 20˚ C. and 100˚ C'. |
| Extent | 88p |
| Format | Typescript |
| Manuscript |
| Physical description | Ink and graphite pencil on paper |
| Access status | Open |
| Related material | DOI: 10.1098/rspa.1909.0015 |
| DOI: 10.1098/rsta.1911.0006 |
Fellows associated with this archive
| Code | Name | Dates |
| NA5307 | Callendar; Hugh Longbourne (1863 - 1930); physicist | 1863 - 1930 |