Accession No

1337

Brief Description

moving magnet, reflecting galvanometer, Edelmann, 1879-1889 (c)

Origin

Munchen; Germany

Maker

Edelmann

Class

electrical

Earliest Date

1879

Latest Date

1889

Inscription Date

Material

metal (brass, other, copper); wood; glass

Dimensions

length 625mm; height 674mm; breadth 206mm

Special Collection

Provenance

Transferred from the Cavendish Laboratory, University of Cambridge. Transferred to the Cavendish Laboratory from Newnham College, University of Cambridge, 1919. Originally belonged to the Balfour Laboratory.

Inscription

‘EDELMANN
MUNCHEN’ (on track)
‘B.L
E.136’ (on coil box (added))

Description Notes

Tripod base with brass levelling feet; horizontal brass track-supports on sliding metal frames; two sets of coils on wooden formers; each set contains two coils, with four brass terminals; central metal frame supports suspension tube; ring-shaped magnet is suspended within cavity of copper cylinder; coils slide to enclose cylinder; circular plane mirror attached to, and above suspended mirror with metal frame; mirror visible through glazed window at bottom of suspension tube; adjustable controlling magnet mounted on suspension tube.

Condition: fine (suspension broken); complete.

References

Events