Siemens galavanometer. 19th-century artwork showing the electric circuits in a Siemens all-purpose galvanometer. A galvanometer is a device that measures an electrical current by the magnetic deflection it produces. It was first developed in the 1820s. The firm founded by German inventor Werner von Siemens developed a universal galvanometer in 1868 for use in telegraphy. Artwork from an 1873 edition of a German book on the application of electromagnetism to the new technology of telegraphy | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / King's College London |
Bildgröße: | 3425 px × 5289 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |