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Collodion is a flammable, syrupy solution of nitrocellulose in ether and alcohol. There are two basic types: flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible nitrocellulose film. While it is initially colorless, it ...
4 days ago · "collodion process" published on by null. In photography, a method of achieving light-sensitive surfaces which remain in place on their supports. The process was successfully pioneered by Frederick Scott Archer in 1851 using a mixture of nitrocellulose dissolved in ethyl ether and ethyl alcohol called collodion (based on the Greek word for glue) as a vehicle for coating potassium iodide on glass.
Jun 5, 2024 · The collodion process today is virtually obsolete, its place taken by special high-contrast emulsions coated on film base. The distinguishing feature of the collodion process is the fact that the plate had to be coated, sensitized, and exposed while still wet. For this reason, it is known as the wet-plate process.
The Collodion process. Introduced in 1851, by Frederick Scott Archer, the wet collodion process was a fairly simple, if somewhat cumbersome photographic process. A 2% solution of collodion, bearing a very small percentage of potassium iodide, was poured over a plate of glass, leaving a thin, clear film containing the halide.
The collodion process is an early photographic process. The collodion process, mostly synonymous with the "collodion wet plate process", requires the photographic material to be coated, sensitized, exposed, and developed within the span of about fifteen minutes, necessitating a portable darkroom for use in the field.
Feb 19, 2024 · Melody. The next element of music is Melody. Melody is which is a sequence of notes that create a recognizable tune. This sequence of notes is usually repeated throughout the course of a piece of music or song. The melody is another important element in a song, and it is often what people remember long after the music is over.
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A Ground Bass is a short recurring melodic pattern written in the bass line of the music. It is an ostinato pattern that occurs in the lowest part. Composers often use rhythmic variations of the ground bass to create textural interest throughout the piece. The most famous example is probably Pachelbel’s Canon.
