ABNEY, W. de W.

On the determination of the Photometric Intensity of the Coronal Light during the Solar Eclipse of April 16th, 1893. Received April 14, - Read April 30, 1896.

(London, Harrison and Sons, 1897). 4to. No wrappers as extracted from "Philosophical Transactions" Year 1896, Volume 187 - Series A. Pp. 433-442.

First printing. Abney was a pioneer in the sensitometry of photographic images, and inventor of a dry photographic emulsion. His "Instruction in Photography", 1871 became a standard text.

Order-nr.: 44043