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RGO Archives/RGO 6 contains:
<-- See earlier
625 Correspondence on the Start Point time signal
626 Time ball and clock statistics
627 Papers on telegraphic communications
628 Papers on telegraphic communications
629 Papers on telegraphic communications
630 Correspondence with telegraph companies
631 Papers on galvanism and electric clocks
632 Papers on galvanism and electric clocks
633 Papers on determining galvanic longitudes
634 Papers on the galvanic longitude of Brussels
635 Papers on the galvanic longitude of Paris
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Papers of George Airy

Title Papers on determining galvanic longitudes
Reference RGO 6/640
(former reference: C2/218)
Covering Dates 1878–1888
Extent and Medium 2 boxes
Content and context

Correspondence and papers concerning proposals and operations to determine, with the assistance of the Royal Observatory, the longitude of Lisbon, Leiden, the Cape Observatory, Gibraltar, places in Australia, New Zealand and Egypt, and Mauritius; and the difference in longitude between Malta and Bombay. The papers include errors of the Greenwich clock; observations of telegraph signals; J.W. Green's abstract of the Greenwich - Lisbon - South American longitudes; the exchange and summary of time signals with Gibraltar; J. Tebbutt's article from 'The Sydney Morning Herald' on the longitude of Sydney; and observations on determining the difference in longitude between Malta and Bombay. The correspondents include T.E.V. Oppolzer, R. Hall, W.H.M. Christie, D. Gill, F.J.O. Evans, J.R. Hind, G.O. Draper, R.C.J. Ellery, N.R. Pogson, A.R. Clarke, J.A.C. Oudemans, J.J. Thomson, O. Heaviside, C.P. Smyth, W. Spottiswoode, W. Harkness, H. James and L. Darwin.

Further information

Indexed

Index Terms
Australia
Bombay
Egypt
Electricity
Gibraltar
Leyden
Lisbon
Longitude
Malta
Mauritius
New Zealand
South America
Sydney
Telegraphy
Christie, Sir William Henry Mahoney (1845-1922) Knight, astronomer
Royal Observatory, Cape of Good Hope
Ellery, Robert Lewis John (1827-1908) astronomer
Gill, Sir David (1843-1914) Knight, astronomer
Hind, John Russell (1823-1895) astronomer
Oppolzer, Theodor Egon Ritter von (1841-1886) astronomer
Pogson, Norman Robert (1829-1891) astronomer
Smyth, Charles Piazzi (1819-1900) astronomer
Spottiswoode, William (1825-1883) mathematician and physicist
Clarke, Alexander Ross (1828-1914) Fellow of Royal Society
Draper, John William (1811-1882) chemist and historian
Evans, Frederick John Owen (1815-1885) hydrographer
No further on-line information.

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