Abney Capt William De W (1 results)

Soft cover. Condition: Very Good. ABNEY, Capt. (William de W.) "Solar Physics I"', "Solar Physics II", and "Solar Physics III", being a three-part paper in three issues of "Nature, an Illustrated Weekly Journal of Science", London, 1881-2. Includes: (1) "Solar Physics I" in Nature, vol 25 # 63, 15 December 1881, pp 162-166 in the weekly issue of pp 145-168. (2) "Solar Physics II", vol 25 #64, 22 December 1881, pp 187-191 in the issue of pp 169-192. (3) "Solar Physics III", pp 252-257 in the issue of pp 240-260, 12 January 1882. Illustrated with 26 text illustrations. A long, extended tour of the current state of solar physics. 3 weekly issues, each cleanly extracted from a larger bound volume. Crisp. VG [++] "Abney was one of the founders of modern photography, combining a scientific approach, ingenuity, and manipulative skill with a talent for popularization. In later life his interest in color photography led him to investigate theories of color vision. Abney's first astronomical publications were reports on an expedition he led to Egypt in December 1874, to photograph a transit of Venus across the face of the sun. In preparation for this expedition Abneyby then a captaininvented a dry photographic emulsion (1874): this, his "albumen beer" process, remained in use for general as well as solar photography until superseded by commercial gelatin products, He went on to study the chemistry of latent image developing (1877) and to introduce hydroquinone (1880), still one of the best developing agents known.Extending his interests to spectroscopy. Abney was the first to suggest (1877) that stars with rapid axial rotation could be detected by broadened lines in their spectraan idea later to have wide application. He then devised a red-sensitive emulsion and with it made the first spectroscopic analyses of the structure of organic molecules (1882) and the first photographs of the solar spectrum in the infrared (1887). This was followed by comparative studies of how sunlight is altered in passing through our atmosphere, made at sea level and in the Swiss Alps(1888, 1894)."--Encyclopedia dot com.