From:
George Biddell Airy
To:
Sir John Herschel
Date:
[21 April 1842]
Source of text:
RS:HS 1.104 (C: RGO 6.463.302)
Summary:
Returns photographs of spectrum, with observations on the results.
Contributor:
John Herschel Project
Showing 1–2 of 2 items
Returns photographs of spectrum, with observations on the results.
Thanks for calotypes involving persons engaged in actions. Gives encouragement to WT's planned photographic tour in Germany. JH has been experimenting regarding color photography.