Photographic Developer - History

History

At the start of photography a wide range of developing agents were experimented with including human urine. Very soon more successful agents came into use such as salts of iron such as iron oxalate, iron sulfate and iron lactate as in the ferrotype, wet plate and ambrotype processes.

Read more about this topic:  Photographic Developer

Famous quotes containing the word history:

    It’s a very delicate surgical operation—to cut out the heart without killing the patient. The history of our country, however, is a very tough old patient, and we’ll do the best we can.
    Dudley Nichols, U.S. screenwriter. Jean Renoir. Sorel (Philip Merivale)

    The second day of July 1776, will be the most memorable epoch in the history of America. I am apt to believe that it will be celebrated by succeeding generations as the great anniversary festival. It ought to be commemorated, as the day of deliverance, by solemn acts of devotion to God Almighty. It ought to be solemnized with pomp and parade, with shows, games, sports, guns, bells, bonfires and illuminations, from one end of this continent to the other, from this time forward forever more
    John Adams (1735–1826)

    I believe that history might be, and ought to be, taught in a new fashion so as to make the meaning of it as a process of evolution intelligible to the young.
    Thomas Henry Huxley (1825–95)