Abstract
GALVANOMETERS of innumerable kinds abound, and each form has some special merit which renders it useful for certain restricted services. The old astatic instrument of Nobili is still preferred by many to the more modern mirror galvanometer of Sir W. Thomson because it requires no lamp, and can be used without darkening the room. The tangent galvanometer still holds its own in the testing-room for simple tests; and the lineman's detector is still indispensable on the score of its portability. For commercial purposes, where strong currents and steady potentials have to be measured, the newer ampere-meters and volt-meters have displaced the older forms of instrument. But still there is no best galvanometer of universal adaptability, even the Siemens “universal” galvanometer being too clumsy to meet with general favour.
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The Galvanometer of D'arsonval and Deprez . Nature 31, 86–88 (1884). https://doi.org/10.1038/031086a0
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DOI: https://doi.org/10.1038/031086a0