Abney, William de Wiveleslie
1843 - Born on the 24th of July in Derby, England.
1861 - He attended the Royal Military Academy and joined the Royal Engineers.
- He was a pioneer of several technical aspects of photography.
- He became a chemical assistant at the Chatham School of Military Engineering.
1874 - He developed a dry photographic emulsion, which replaced "wet" emulsions.
- He used this emulsion in an Egyptian expedition to photograph the transit
of Venus across the sun.
1880 - He introduced hydroquinone.
1882 - He introduced new and useful types of photographic paper, including a formula for
gelatin silver chloride paper.
1887 - He was also a pioneer in photographing the infrared solar spectrum, as well as researching
sunlight in the medium of the atmosphere.
- He invented the "Abney Level", a combined clinometer and Spirit level , used by surveyors
to measure slopes and angles.
1920 - He died on the 3rd of December in Folkestone, England.
Page last updated: 10:13pm, 28th May '07