Skip to main content

Correspondence on a total eclipse, 1914 - 1922

Reference Code: GBR/0180/RGO 8/150

Scope and Contents

Correspondence and papers regarding A. Crommelin and C. Davidson's expedition to Sobral, Brazil, for the total eclipse of 29 May 1919. The purpose of the expedition was to determine whether light is deflected by gravitation in accordance with Einstein's Theory of Relativity. There are a number of photographs, a typed report by Crommelin on the purpose of the expedition, computations, manuscript reports on preparations for the eclipse and on the expedition, a set of correspondence between Dyson and Louis A. Bauer (Carnegie Institution of Washington), and two printed copies of an article by Davidson on the displacement of gelatine photographic films shown by precise measurement. Also included is an apparently unrelated letter from Annie Maunder to Dyson dated 1914 [page 82].


  • Creation: 1914 - 1922


Conditions Governing Access

From the Management Group:

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 Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (


1 bundle(s) (1 bundle)

Language of Materials


Date information

DateText: mainly 1917-1922.

Finding aid date

2006-04-24 15:02:28+00:00

Includes index.



Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
West Road
Cambridge CB3 9DR United Kingdom