"Collodion" Quotes from Famous Books
... content to spend many days upon the spot, it would be almost impossible to hit it off exactly. On this last occasion,—although we did not prepare the plate until a good twenty minutes after the turf was thrown in,—the spring remained inactive so much longer than is usual that the collodion became quite insensitive, and the eruption left no ... — Letters From High Latitudes • The Marquess of Dufferin (Lord Dufferin)
... developed in the ordinary way, but the development is carried much further than if it were to be used as an ordinary negative. After developing and thoroughly washing, the negative is placed on a black cloth with the collodion side downward, and exposed to diffuse light for a time, which varies from a few seconds to two or three minutes, according to the intensity of the plate. Afterward the conversion is effected by moistening the ... — Scientific American Supplement, No. 286 - June 25, 1881 • Various |