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Thomson mirror galvanometer of tripod type, from around 1900
Thomson mirror galvanometer of tripod type, from around 1900
Galvanometer by H.W. Sullivan, London. Late 19th or early 20th century. This galvanometer was used at the transatlantic cable station, Halifax, NS, Ca
Galvanometer by H.W. Sullivan, London. Late 19th or early 20th century. This galvanometer was used at the transatlantic cable station, Halifax, NS, Canada
Modern mirror galvanometer from Scanlab
Modern mirror galvanometer from Scanlab
A moving coil galvanometer with its glass cover separated and mirror absent
A moving coil galvanometer with its glass cover separated and mirror absent
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Johann Christian Poggendorff
Johann Christian Poggendorff
Biographisch-literarisches Handwörterbuch zur Geschichte der exakten Wissenschaften, 1863
Biographisch-literarisches Handwörterbuch zur Geschichte der exakten Wissenschaften, 1863