Signedmarked on stand: KNOTT / BOSTON
marked on base: LE Knott Apparatus Co / Boston
Inscribedmarked on base: CARNEGIE / GC. E 734
FunctionThis galvanometer was used in classroom demonstrations to measure electric currents. A compass needle is pivoted in the middle of a coil. Passing a current through the coil exerts a torque on the needle, which then aligns itself with the resulting magnetic field.
Historical AttributesBelonged to Prof. Theodore William Richards, Harvard University.
ProvenanceFrom the Department of Chemistry, Harvard University, 5/5/1952.