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The Royal Society: Science in the Making

Copy of a letter from John Wallis to Edmond Halley dated 26 April 1687 at Oxford

Reference number: RBO/7/36

Date: 1687

Description

Concerning the apparent magnitude of the sun or moon which appear larger at the horizon than when they are higher in the sky - concluded to be an optical illusion

Reference number
RBO/7/36
Earliest possible date
1687
Page extent
5 pages
Format
Manuscript

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Citation

Copy of a letter from John Wallis to Edmond Halley dated 26 April 1687 at Oxford, 1687, RBO/7/36, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/rbo_7_36/copy-of-a-letter-from-john-wallis-to-edmond-halley-dated-26-april-1687-at-oxford, accessed on 10 April 2026

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https://makingscience.royalsociety.org/items/rbo_7_36/copy-of-a-letter-from-john-wallis-to-edmond-halley-dated-26-april-1687-at-oxford

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  • Register Books

    The 'Register Books Originals' contain copies of scientific papers submitted to the Society and considered for publication. The papers were transcribed to establish their precedence for a particular discovery or idea.

    Dates: 1661 - 1739

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