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Cover page of the journal publication, which reads: IX. A Determination of the Deflection of Light by the Sun's Gravitationul Field, from Observations made at the Total Eclipse of May 29, 1919. By Sir F. W. DysoN, F.R.S., Astronomer Royal, Prof: A. S. EDDINGTON, F.R.S., and Mr. C. DAVIDSON. (Communicated by the Joint Permanent Eclipse Committee.) Received October 30,-Read November 6, 1919, [PLATE 1.] CONTENTS. I. Purpose of the Expeditions I. Preparations for the Expeditions IlI. The Expedition to Sobral IV. The Expedition to Principe V. General Conclusions I. PURPOSE OF THE EXPEDITIONS. 1. THE purpose of the expeditions was to determine what effect, if any, is produced by a gravitational field on the path of a ray of light traversing it. Apart from possible surprises, there appeared to be three alternatives, which it was especially desired to discriminate between...

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Cover page of the journal publication, which reads: IX. A Determination of the Deflection of Light by the Sun's Gravitationul Field, from Observations made at the Total Eclipse of May 29, 1919. By Sir F. W. DysoN, F.R.S., Astronomer Royal, Prof: A. S. EDDINGTON, F.R.S., and Mr. C. DAVIDSON. (Communicated by the Joint Permanent Eclipse Committee.) Received October 30,-Read November 6, 1919, [PLATE 1.] CONTENTS. I. Purpose of the Expeditions I. Preparations for the Expeditions IlI. The Expedition to Sobral IV. The Expedition to Principe V. General Conclusions I. PURPOSE OF THE EXPEDITIONS. 1. THE purpose of the expeditions was to determine what effect, if any, is produced by a gravitational field on the path of a ray of light traversing it. Apart from possible surprises, there appeared to be three alternatives, which it was especially desired to discriminate between...
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Robert McNees (mcnees@mastodon.social)'s status on Monday, 06-Nov-2023 18:07:08 UTC Robert McNees
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Data from the Sobral expedition suggested that the trajectory of light from distant stars was bent by about 2 seconds of arc as it grazed the limb of the Sun. The Principé data gave about 1.6 seconds of arc.
https://royalsocietypublishing.org/doi/abs/10.1098/rsta.1920.0009

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