Skip to main content

Cambridge University Libraries are providing a blend of online and controlled in-person services. Please see our website for more details.

Papers on earth currents, 1872 - 1911

 File
Reference Code: GBR/0180/RGO 7/119

Scope and Contents

Correspondence with the General Post Office and others on Earth currents, disturbances and the maintenance of underground wires, 1891-1911.

Correspondence with C.O. Grimshaw concerning a fault in a dynamo armature, 1893.

Trace showing Earth current curves, sent by E. Raymond Barker, with correspondence, 1898-1899.

Correspondence with C. Chree concerning the details of arrangements for the registration of Earth currents, 1900.

Correspondence with G.E. Preece concerning a magnetic storm, 1892.

Correspondence with Dr Stein requesting details of a photographic system, 1872.

Paper by William Ellis concerning Earth currents, 1879.

Correspondence with W.G. Adams and Professor Förster concerning Earth currents, 1881.

Notes on the determination of scale for Earth current registers, 1886-1889.

Correspondence with South Eastern Railways concerning Earth current wires and abnormal fluctuations, 1891.

Correspondence with G.E. Preece concerning Earth currents recorded on 4 February 1872 and others of 1872-1875.



















Dates

  • 1872 - 1911

Conditions Governing Access

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact mss@lib.cam.ac.uk. Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (www.lib.cam.ac.uk).

Extent

1 bundle(s) (1 bundle)

Language of Materials

English

Former / Other Reference

K14

Finding aid date

2006-03-30 10:43:31+00:00

Includes index.

Creator

Repository Details

Part of the Cambridge University Library Repository

Contact:
Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom


The UK Archival Thesaurus has been integrated with our catalogue, thanks to Kings College London and the AIM25 project for their support with this.