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RGO Archives/RGO 6 contains:
<-- See earlier
111 Solar eclipse reductions
112 Observations and reports on solar eclipses
113 Papers on longitude and solar eclipses
114 Observations and calculations of longitude
115 Observations and calculations of longitude
116 Longitude papers
117 Livingstone's South African observations
118 Eclipses and longitude calculations
119 Correspondence on solar eclipse
120 Papers of solar eclipse
121 Observations and computations of solar eclipse
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Papers of George Airy

Title Longitude papers
Reference RGO 6/116
(former reference: L2/18)
Covering Dates 1862–1870
Extent and Medium 1 box
Content and context

Correspondence and observations on transatlantic longitudes, a history of finding longitudes and methods to find longitude. The majority of the book is dedicated to eclipses, particularly the 1858 eclipse, with sketches and a photographic strip; the 1861 eclipse, with various French circulars, including methods of photographing the phenomena and a drawing of its various stages; the 1867 annular eclipse, with the Greenwich observations, an article in the 'Daily Telegraph' and Dr Weiss' report on the eclipse; and the 1869 total eclipse, with articles in the 'Kentucky Yeoman', 'Friends Review', two editions of the 'Journal of the Franklin Society', and the 'Philadelphia Photographer', including three photographs. There is also a large quantity of correspondence with H. Morton, W. De La Rue and H.D. Vail, with four photographs and a drawing of solar flares. Other brief items include an article on solar flares and some work on ancient eclipses.

Further information

Indexed

Index Terms
Longitude
Rue, Warren De La (1815-1889) chemist and astronomer
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