RGO Archives/RGO 8 contains:
<-- See earlier
145	Correspondence with 'The Engineer'
146	Correspondence on time signals
147	Correspondence on time balls
148	Correspondence on longitude
149	Correspondence on clocks and chronographs
150	Correspondence on a total eclipse
151	Correspondence on grant to Mrs Jackson
152	Insurance policy
153	Double stars journals
154	Observations of luminous meteors
155	Clock comparisons and time signals
See later -->

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Papers of Frank Dyson

Title	Correspondence on a total eclipse
Reference	RGO 8/150
Covering Dates	1917–1922
Extent and Medium	1 bundle

Content and context

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 paper by Crommelin on the purpose of the expedition, computations, and two manuscript copies of an article by Davidson on the displacement of gelatine photographic films shown by precise measurement.

Further information

Indexed

Index Terms

Sobral

Crommelin, Andrew Claude de la Cherois (1865-1939) astronomer

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