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DeNobile Galvanometer
Specifications
DeNobile Galvanometer
Category
Science and Technology
Classification
CHENHALL - Tools & Equipment for Science & Technology - Electrical & Magnetic T&E - Electrical & Magnetic Measurement Devices - Instrument, Electrical - Galvanometer
Object Origin
c. 1910
Physical Characteristics
Object Description: Brass metal galvanometer mounted on a flat black wooden base with a flat bottom edge and curved sides. There are faux drawers on the side of the base. There is a gold-colored circular disk at the top of the base, where the curved edges are. A vertical brass pole extends from the center of the disk. On the lower half of the base are four (4) short pegs and two (2) slightly larger pegs, one in each corner.
Measurements: Object:
Height: 18.75 in, Width: 12.75 in, Depth: 21 in
Weight: 12.4 lbs
Credit
Received from the Italian Government, National Council of Research, 33.418
Display Status
On Exhibit
DeNobile Galvanometer
About: DeNobile Galvanometer
About: DeNobile Galvanometer
Originally invented by Italian physicist Leopoldo Nobili in 1825, this 1910s galvanometer was used to detect small electric currents based on the tangent law of magnetism, which states that when a current is run through a coil of wire containing a magnetized needle, creating a magnetic field, the needle’s angle of rotation can be used to calculate the amount of current. Another needle magnetized in the opposite direction, serves to cancel out the effect of the Earth's magnetic field, making this galvanometer an astatic galvanometer.
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