Box 2: RGO 43/9-17
Contains 9 Results:
Correspondence and memoirs on the International Programme for the Determination of Longitude using radio time signals, 1925 - 1926
There are letters from Downing Street, F.W. Dyson, and General G. Ferrié of the Académie des Sciences, Paris.
Correspondence, mainly restricted comments, on the results obtained in the 1933 International Programme of Longitude Determination, 1933 - 1934
Results for some of the stations are attached. Correspondents include, for example, E.V. Appleton and R.A. Watson-Watts.
Correspondence on the measurement of time lags, in relays, radio receivers and other Time Department equipment, by the use of an oscilloscope, 1933 - 1934
Correspondents include, for example, H. Spencer-Jones, E.V. Appleton, R.A. Watson-Watts and the Bureau International de l'Heure.
Correspondence on a programme to measure the longitude of the Australian National Observatory (Mount Strombo), 1946
Correspondence of H. Spencer-Jones, Richard Woolley and H.M. Smith on a co-operative programme between the RGO and Australian National Observatory (Mount Strombo).
Assorted correspondence on time transfer using artificial satellites, 1960 - 1976
Up to 1972, the correspondence was between the RGO and various military and civil establishments, including the Royal Aircraft Establishment, Farnborough, the Admiralty, the National Physics Laboratory, on feasibility, accuracy etc. After 1972, the correspondence is mainly devoted to observations made by the RGO of the Timation satellites (e.g. NTS 2), under the auspices of the Naval Research Laboratory, Washington.
Results obtained in the International Geophysical Year (1957-8), 1957 - 1962
Notices and correspondence on the reporting of observations and on the publications containing results obtained during the International Geophysical Year.
Chronometer Department papers, 1962 - 1964
Many papers are routine administrative documents. These are the results of tests of early quartz crystal type chronometers, and letters relating to the loan of the chronometer Harrison No. 4 for exhibition in the United States.
Papers describing developments leading up to the invention of atomic clocks, 1948 - 1959
Includes: US National Bureau of Statistics Technical Report 1320, 'The Atomic Clock'; brochure describing the 'Atomichron', 1956; reactions to the development of an atomic clock.
Assorted correspondence of the Time Department, 1938 - 1971
Includes a paper discussing the accuracy of time signals in the 1920s and, in the handwriting of Dr Hunter, perhaps the first draft of the earliest plans for the equatorial group at Herstmonceux.