Carbons for a Holmes arc lamp
Date
1886
Creator
James Nicholas Douglass (1826 - 1898, British) , Civil engineer
Object type
Archive reference number
Material
Dimensions
height (drawing): 327mm
width (drawing): 202mm
width (drawing): 202mm
Subject
Description
Marginal sketch showing an elevation and section of square carbon rods of the type used in arc lamps for lighthouses devised by Frederick Hale Holmes (b.1812) and tested by Michael Faraday (1791-1867). The first of these was introduced into the South Foreland High Lighthouse near Dover in Kent, England, in 1858.
Illustration from the manuscript version of the paper ‘On fluted craterless carbons for arc lighting’, by James N. Douglass, Proceedings of the Royal Society, vol.40 (1886), pp.500-502. This illustration was not used in the published paper. Headed in ink: ‘Elevation and Sectional Plan of the “Holmes” square carbons and their arc (full size)’.
Sir James Nicholas Douglass (1826-1898) civil engineer and lighthouse builder was elected a Fellow of the Royal Society in 1887.
Illustration from the manuscript version of the paper ‘On fluted craterless carbons for arc lighting’, by James N. Douglass, Proceedings of the Royal Society, vol.40 (1886), pp.500-502. This illustration was not used in the published paper. Headed in ink: ‘Elevation and Sectional Plan of the “Holmes” square carbons and their arc (full size)’.
Sir James Nicholas Douglass (1826-1898) civil engineer and lighthouse builder was elected a Fellow of the Royal Society in 1887.
Associated place