From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[18 April 1842]
Source of text:
RS:HS 17.311
Summary:
Sends JH samples of his calotypes. Off to Germany on a photographic expedition.
Contributor:
John Herschel Project
Showing 1–2 of 2 items
Sends JH samples of his calotypes. Off to Germany on a photographic expedition.
Carl Steinheil has proposed making telescope mirrors by plating silver on glass. Is writing to JH to tell him that somewhat earlier he had included this process in one of his patents.