| RefNo | PP/15/31/1 |
| Previous numbers | PP/47/32 |
| Level | Item |
| Title | Manuscript, 'On a pneumatic analogue of the Wheatstone bridge' by William Napier Shaw |
| Date | 1890 |
| Description | Shaw writes: 'When fluid flows steadily through an orifice in a thin plate, the relation between the rate of flow, V, measured in units of volume of fluid per second, and the head H (the work done on unit mass of the fluid during its passage) may be expressed by the equation:— H = RV^2, where R is a constant depending upon the area of the orifice, If the head be measured in gravitation units, R is equal to 1/2gk^2a^2, where g is the acceleration of gravity, a the area of the orifice, and k the coefficient of contraction of the vein of fluid, a factor which is independent of the rate of flow.'
Annotations in pencil and ink. Includes a sketch and diagram of Shaw's pneumatic analogue of the Wheatstone bridge.
Subject: Pneumatics / Fluid dynamics / Electricity
Received 31 March 1890. Read 24 April 1890. Communicated by Lord Rayleigh [John William Strutt].
A version of this paper was published in volume 47 of the Proceedings of the Royal Society as 'On a pneumatic analogue of the Wheatstone bridge'. |
| Extent | 15p |
| Format | Manuscript |
| PhysicalDescription | Ink and graphite pencil on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | DOI: 10.1098/rspl.1889.0107 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA7142 | Shaw; Sir; William Napier (1854 - 1945) | 1854 - 1945 |
| NA6090 | Strutt; John William (1842 - 1919); 3rd Baron Rayleigh | 1842 - 1919 |