Sobral
Subject
Subject Source: Local sources
Found in 3 Collections and/or Records:
File
Correspondence on a total eclipse, 1914 - 1922
File
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...
Dates:
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 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).
File
Material on the 1919 eclipse, 1919 - 1920
File
Reference Code: GBR/0180/RGO 8/166
Scope and Contents
A notebook titled 'Eclipse Expedition 1919 May 29 Sobral', containing an account of the expedition and additional information, and a glass photographic plate of the [May 1919] eclipse region taken on 6 May 1920, with an accompanying wax paper pro-forma giving information on the plate.
Dates:
1919 - 1920
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 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).
File
Notes on the 13" astrographic equatorial, 1889 - 1919
File
Reference Code: GBR/0180/RGO 8/167
Scope and Contents
A notebook containing details regarding the erection of the 13" astrographic equatorial, which was built by Sir H. Grubb and erected at Greenwich in 1890. Running from the back of volume, on the reverse of the page, are astronomical observations and some calculations. A note inserted in the book around 1983 seems to indicate that the first part of the volume relates to 1889, and the additions at the back concern the May 1919 total eclipse expedition at Sobral.
Dates:
1889 - 1919
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 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).