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Copy letter, from Sir John Herschel to James David Forbes, dated at Collingwood

Reference number: HS/25/6/15

Date: 15 November 1842

Description

Contemporary copy in sender's hand, signed by sender. Received James Forbes's paper on 'thermographic process.' Believes that thermic rays were responsible for experimental results of James Forbes, J. W. Draper, and Ludwig Moser. John Frederick William Herschel's theory of and experiments with thermic rays, which are different from 'calorific' and visible rays, in solar spectrum.

Reference number
HS/25/6/15
Earliest possible date
15 November 1842
Page extent
4 pages
Format
Manuscript

Creator name

John Frederick William Herschel

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Citation

John Frederick William Herschel, Copy letter, from Sir John Herschel to James David Forbes, dated at Collingwood, 15 November 1842, HS/25/6/15, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/hs_25_6_15/copy-letter-from-sir-john-herschel-to-james-david-forbes-dated-at-collingwood, accessed on 25 March 2025

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  • Herschel Letters

    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.

    Dates: 1807 - 1875

    View collection