The spelling of the word "condensation collodium" can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. "Condensation" is spelled with the "k" sound at the beginning, represented by /k/. "Collodium" is spelled with a hard "c" sound, represented by /k/, as well as the "d" sound, represented by /d/, and the "ium" ending, represented by /ɪəm/. In summary, the correct spelling of the word is "condensation collodium", pronounced /kɒndɛnˈseɪʃən kəˈləʊdɪəm/.
Condensation collodion refers to a type of collodion solution that is traditionally used in photography. Collodion itself is a clear, syrupy liquid composed of pyroxylin (a nitrocellulose compound) dissolved in a mixture of solvents, mainly alcohol and ether. It has been widely used as a binder for photographic emulsions.
The term "condensation" in condensation collodion refers to the chemical process by which the collodion is made. It involves the reaction of two substances: pyroxylin and castor oil. When these two components are combined, condensation occurs, resulting in the formation of a viscous and elastic collodion solution. This particular type of collodion is valued in photography for its ability to produce distinctive texture and character in images.
Condensation collodions are typically applied to glass plates or metal sheets as a sensitizing layer. This layer is then coated with a light-sensitive silver halide emulsion, such as silver bromide or silver iodide. Once the collodion is exposed to light and processed, it produces a unique aesthetic known for its fine detail, sharpness, and tonal range.
In summary, condensation collodion is a specialized type of collodion solution used in photography. It is created through a condensation process involving pyroxylin and castor oil, and it is mainly valued for its distinctive character and texture in photographic images.
C. Stypticum.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.