The Mirror Galvanometer
In short: Discover how William Thomson's mirror galvanometer used light and magnetism to detect the first faint telegraph signals across the Atlantic Ocean.
A 1:34 short film in the series “Forgotten Stories”.
Sources used in this film: Library of Congress, “Deep sea telegraphy. Comparison between the cable submerged from Ireland to Newfoundland in 1866 by the Telegraph construction and maintenance company, and that proposed on Allan's principle for the same distance and depth ... [n. p. 1866].”; Smithsonian Institution Libraries, “Cabling the Seas a Smithsonian Institution Libraries Exhibition”; Nature, “The Progress of the Telegraph *”; Science Museum, “How perseverance laid the first transatlantic telegraph cable | Science Museum”; Cambridge University Library Special Collections, “Archives and Modern Manuscripts Image of the Month: William Thomson’s Submarine Cable – Cambridge University Library Special Collections”; The Henry Ford, “detail”; Smithsonian Institution Libraries, “Cabling the Seas a Smithsonian Institution Libraries Exhibition”; Grinnell College Libraries, “Thomson's Mirror Galvanometer · Grinnell College Physics Museum · Grinnell College Libraries”; Bell System Technical Journal, “BSTJ 6: 3. July 1927: The Application of Vacuum Tube Amplifiers to Submarine Telegraph Cables. (Curtis, Austen M.) : Free Download, Borrow, and Streaming : Internet Archive”.
Sources used in this film
- Library of Congress — Deep sea telegraphy. Comparison between the cable submerged from Ireland to Newfoundland in 1866 by the Telegraph construction and maintenance company, and that proposed on Allan's principle for the same distance and depth ... [n. p. 1866]. · View →
- Smithsonian Institution Libraries — Cabling the Seas a Smithsonian Institution Libraries Exhibition · View →
- Nature — The Progress of the Telegraph * · View →
- Science Museum — How perseverance laid the first transatlantic telegraph cable | Science Museum · View →
- Cambridge University Library Special Collections — Archives and Modern Manuscripts Image of the Month: William Thomson’s Submarine Cable – Cambridge University Library Special Collections · View →
- The Henry Ford — detail · View →
- Smithsonian Institution Libraries — Cabling the Seas a Smithsonian Institution Libraries Exhibition · View →
- Grinnell College Libraries — Thomson's Mirror Galvanometer · Grinnell College Physics Museum · Grinnell College Libraries · View →
- Bell System Technical Journal — BSTJ 6: 3. July 1927: The Application of Vacuum Tube Amplifiers to Submarine Telegraph Cables. (Curtis, Austen M.) : Free Download, Borrow, and Streaming : Internet Archive · View →
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Sources
- Summary by Intellect · source: Library of Congress: Deep sea telegraphy. Comparison between the cable submerged from Ireland to Newfoundland in 1866 by the Telegraph construction and maintenance company, and that proposed on Allan's principle for the same distance and depth ... [n. p. 1866].
- Also: Smithsonian Institution Libraries: Cabling the Seas a Smithsonian Institution Libraries Exhibition
- Also: Nature: The Progress of the Telegraph *
- Also: Science Museum (London): How perseverance laid the first transatlantic telegraph cable | Science Museum
- Also: Cambridge University Library Special Collections: Archives and Modern Manuscripts Image of the Month: William Thomson’s Submarine Cable – Cambridge University Library Special Collections
- Also: The Henry Ford: detail
- Also: Smithsonian Institution Libraries: Cabling the Seas a Smithsonian Institution Libraries Exhibition
- Also: Grinnell College Libraries: Thomson's Mirror Galvanometer · Grinnell College Physics Museum · Grinnell College Libraries
- Also: Bell System Technical Journal: BSTJ 6: 3. July 1927: The Application of Vacuum Tube Amplifiers to Submarine Telegraph Cables. (Curtis, Austen M.) : Free Download, Borrow, and Streaming : Internet Archive
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