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Silver thimble, used to pass a current through the 1866 Transatlantic cable, 1860-1866
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Silver thimble, used to pass a current through the 1866 Transatlantic cable, 1860-1866, result 1 of 1

Item Details
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Title
Silver thimble, used to pass a current through the 1866 Transatlantic cable, 1860-1866
Silver thimble, unknown maker, probably Republic of Ireland, c
Work Type
Telecommunications
Date
1860-1866
Location
Republic of Ireland
Material
silver (metal); textile; wood (unidentified)
Measurements
overall: 58 mm x 46 mm x 46 mm, .07 kg
Description
Silver thimble, unknown maker, probably Ireland, 1860-1866. Originally owned by Miss Emily FitzGerald and by means of which an electric current was sent through the two Atlantic telegraph cables in 1866; Silver thimble, unknown maker, probably Ireland, 1860-1866. Originally owned by Miss Emily FitzGerald and by means of which an electric current was sent through the two Atlantic telegraph cables in 1866.; This thimble was used at the cable station at Valentia, Ireland, in a remarkable experiment to demonstrate the sensitivity of the mirror galvanometer used to receive signals sent through the transatlantic telegraph cable. On 12 September 1866 Latimer Clark asked the Newfoundland station to connect the 1865 and 1866 cables together to form a single circuit of 3700 miles across the Atlantic and back. He then borrowed a silver thimble from a visitor, Emily Fitzgerald, and added to it a few drops of acid and a slip of zinc. He connected this small voltaic cell to the cable, and the galvanometer on the bench immediately showed that the minute current had passed both ways across the Atlantic.
Repository
Science Museum, Information Age Gallery: Cable
Donated by R B FitzGerald
Subject
thimble
ID Number
co33251
Source
Image and original data from Science Museum Group - https://collection.sciencemuseum.org.uk
Rights
The source metadata displayed in the Description field is released under a Creative Commons Attribution 4.0 license - https://creativecommons.org/licenses/by/4.0/. All other source metadata is released under Creative Commons Zero - https://creativecommons.org/publicdomain/zero/1.0/. The image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License - https://creativecommons.org/licenses/by-nc-sa/4.0/.
File Properties
File Name
large_1949_0177__0002_.jpg
SSID
26290127

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