On certain Improvements on Photographic Processes described in a former Communication, and on the Parathermic Rays of the Solar Spectrum. Received November 17, - Read November 17, 1842.

"HERSCHEL, JOHN W.F. - THE DISCOVERY OF THE IRON-PRINTING PROCESS.

About this Item

(London, Richard and John E., Taylor, 1843. 4to. No wrappers as extracted from "Philosophical Transactions" 1843 - Part I. Pp. 1-6. First appearance of a pioneer-paper in the history of early photography, as Herschel here for the first time describes his discovery of the iron printing process with ammonio-citrate of iron by both methods, namely with blue lines on a white background and white lines on a blue ground.

Seller Inventory # 42662

Bibliographic Details

• Title: On certain Improvements on Photographic Processes described in a former Communication, and on the Parathermic Rays of the Solar Spectrum. Received November 17, - Read November 17, 1842.
• Binding: Soft cover
• Seller catalogs:
  • Chemistry