. Lighthouse construction and illumination; . Fig. 120. Society of Arts, vol. iv., 1854) that it might be possible toilluminate beacons and buoys by electricity, conveyed through 164 LIGHTHOUSE ILLUMINATION. submarine wires, as shown pictorially in Fig. 120, but Idismissed the plan as inapplicable in the then existing stateof electrical science. In 1865 my attention was again directed to the subjectwhen considering Professor Holmess magneto-electric light,and reference is made to this plan in Messrs. Stevensonsreport of that date.^ For such a purpose neither Holmessnor Wildes light could be em
. Lighthouse construction and illumination; . Fig. 120. Society of Arts, vol. iv., 1854) that it might be possible toilluminate beacons and buoys by electricity, conveyed through 164 LIGHTHOUSE ILLUMINATION. submarine wires, as shown pictorially in Fig. 120, but Idismissed the plan as inapplicable in the then existing stateof electrical science. In 1865 my attention was again directed to the subjectwhen considering Professor Holmess magneto-electric light,and reference is made to this plan in Messrs. Stevensonsreport of that date.^ For such a purpose neither Holmessnor Wildes light could be employed, as they are producedby the rapid consumption of carbons, and require the employ-ment of delicate lamp-machinery, which, though to a largeextent automatic, involves the constant presence of a light-keeper in the lantern: so instead of these the electric sparkwithout carbons was tried in the focus of optical order to increase the brightness of the flash, Pihumkorffsinduction-coil was combined with a Leyden jar, on thesugge
Size: 1938px × 1290px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1881
