scale for reflecting galvanometer
Inventory NumberRS1012
ClassificationGalvanometer Scale
Subject
Dimensions5.1 x 52.7 x 0.6 cm, 1 lb. (2 x 20 3/4 x 1/4 in., 0.5 kg)
Material
DescriptionGlass rectangular scale for a reflecting galvanometer.
Signedunsigned
FunctionThe reflecting galvanometer is a sensitive instrument for measuring current. It consists of a magnet coil with an attached mirror suspended between the poles of a magnet by a thin gold ribbon above and a coiled gold wire below. When an electric current is introduced into the magnet coil it induces a magnetic field, causing the coil to rotate in proportion to the current. The mirror allows the user to see very small deflections, and thus to measure very small currents, by observing a distant reflected scale.
- http://www.humboldt.edu/scimus/HSC.54-70/Descriptions/L&N_EnclSclGalv.htm
- http://www.humboldt.edu/scimus/HSC.54-70/Descriptions/L&N_EnclSclGalv.htm
Leeds & Northrup Company
Date: circa 1920
Object number: 0556b
See also/See also
