From:
Sir John Herschel
To:
Photographic News
Date:
[13 October 1858]
Source of text:
Photographic News, 1 (Oct. 29, 1858), 86
Summary:
Discusses the use in photography of a metallic substance named Junonium.
Contributor:
John Herschel Project
Discusses the use in photography of a metallic substance named Junonium.
Discusses the use of the stereoscope, including stereoscopic views of the moon and sun. Also discusses the appropriate stereoscopic angle.
Recounts experiments JH conducted on the action of the solar spectrum on various silver salts. Explains how JH produced his solar spectrum.