Papers on earth currents, 1872 - 1911
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
- Creation: 1872 - 1911
Creator
- From the Management Group: Royal Greenwich Observatory (Organization)
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
Subject
- Ellis, William, 1828 - 1916 (astronomer) (Person)
- Post Office (Organization)
- South Eastern Railway Co (Organization)
- Chree, Charles, 1860 - 1928 (astronomer) (Person)
- Adams, William Grylls, 1836 - 1915 (scientist and university teacher) (Person)
Repository Details
Part of the Cambridge University Library Repository
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Cambridge CB3 9DR United Kingdom
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