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Letter, from John Henry Dallmeyer to Sir John Herschel, dated at 19 Bloomsbury St.

Reference number: HS/6/2

Date: 24 September 1866

Description

Autograph letter signed by sender. Outlining phenomena in the refraction of light. Has been experimenting with wide angle lenses for cameras and gives some of their defects. Would like John Frederick William Herschel's opinion on how to get rid of the 'secondary focus.'

Reference number
HS/6/2
Earliest possible date
24 September 1866
Page extent
12 pages
Format
Manuscript

Creator name

John Henry Dallmeyer

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Citation

John Henry Dallmeyer, Letter, from John Henry Dallmeyer to Sir John Herschel, dated at 19 Bloomsbury St., 24 September 1866, HS/6/2, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/hs_6_2/letter-from-john-henry-dallmeyer-to-sir-john-herschel-dated-at-19-bloomsbury-st, accessed on 12 December 2024

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    Dates: 1807-1875

    This collection of nearly 10,900 letters, drafts, copies and notes is the largest repository of scientific correspondence from and to Sir John Herschel, leading figure of Victorian science.

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